New Hardware June 2015?

[amelen]

I'm new to the world of bitcoin, but have been involved in web hosting & web hosting hardware for almost 2 decades now. I was thinking about playing around with some of the latest ASIC hardware because there does seem some room for improvement in terms of cooling & design (from my server-building background). The Antminer S5 & SP20 seem like good entry points for some testing, but both seem to be out for 6mo now and some new hardware is probably around the corner. Is it worth waiting for new hardware? Is anything expected in the next 30 days?

Any feedback I can get would be greatly appreciate it. I'll document any R&D I do in the forum.

[TheRealSteve]

Take it as nothing but rumors: Bitmain and Avalon should be out with new chips june/july.
You can already request SFARDS's, and you can try to get a dev kit out of 21 Inc.

That's just chips, though - if you want completed miners, you might as well try and score a decent miner for cheap now and sell them off again later.  Make sure you figure out all the financials.

[amelen]

Take it as nothing but rumors: Bitmain and Avalon should be out with new chips june/july.
You can already request SFARDS's, and you can try to get a dev kit out of 21 Inc.

That's just chips, though - if you want completed miners, you might as well try and score a decent miner for cheap now and sell them off again later.  Make sure you figure out all the financials.

Thanks for the response! I was thinking of a completed miner for initial R&D. "decent miner for cheap" => buying used? What's a good place to find a used one? Ebay?

[Xialla]

Thanks for the response! I was thinking of a completed miner for initial R&D. "decent miner for cheap" => buying used? What's a good place to find a used one? Ebay?

ebay is usually overpriced, just because there are buying mining HW persons without basic bitcoin knowledge as "money machines with guaranteed ROI" haha..

for some "normal" prices, you can check this section https://bitcointalk.org/index.php?board=75.0 anyway, mining makes sense only if you had free or very cheap electricity so do some math and research by yourself before any investment..

[crazyearner]

They are talks of smaller asic chips in the makings. However I do not think will be any time until  SEP, OCT until new untis are in production and even then it is going to be a losing battle as money loaded company's will no doubt swap out old tech with new and just cause a new spike and increase in diff. The days of Avlaon first coming out mass production and then antminers coming out with a much more robust product cheaper and kicking out a lot more hash even now with them with energy cost import taxes will not make RIO back unless  got free energy or really cheap energy to run them daily.

[jeannemadrigal2]

They are talks of smaller asic chips in the makings. However I do not think will be any time until  SEP, OCT until new untis are in production and even then it is going to be a losing battle as money loaded company's will no doubt swap out old tech with new and just cause a new spike and increase in diff. The days of Avlaon first coming out mass production and then antminers coming out with a much more robust product cheaper and kicking out a lot more hash even now with them with energy cost import taxes will not make RIO back unless  got free energy or really cheap energy to run them daily.

I am just curious, what do you base Sep/Oct on?  Do you know someone/something or is it just a hunch?  From what I understand no one really knows when the next batch is coming out but I keep hearing anything from June to December.  I keep looking for legit information but so far all I have found is pure speculation.

[amelen]

Thanks for all the info! I'm going to browse through the used hardware on this forum. I guess I can always just buy the AntMiner S5 @$400/each directly from BitmainTech. I wish someone had more reliable info on the new gen of cards though - I'd hate to be investing time & $$$ into aging equipment & platforms.

[notlist3d]

Thanks for all the info! I'm going to browse through the used hardware on this forum. I guess I can always just buy the AntMiner S5 @$400/each directly from BitmainTech. I wish someone had more reliable info on the new gen of cards though - I'd hate to be investing time & $$$ into aging equipment & platforms.

The "new gen" is going to be SP20, S5,  Avalon 4.1.   SP20's you have to get from secondary markets there are not new ones being produced.

But as far as consumer models of current gen those are main one as far as electric efficiency.

[Rabinovitch]

Take it as nothing but rumors: Bitmain and Avalon should be out with new chips june/july.

There is another rumor that Bitmain's S7 will be issued in july. Information is completely untrusted since I can't find any proofs here.

[bigtransaction]

What is BEST hardware for someone new?  And why?

[zeeshsnrehman2]

What is BEST hardware for someone new?  And why?

wait for a bit i heard the s6 or s7 will be out in june-july.
more hashing power = easier ROI but we do have to consider the difficulty level too.

[notlist3d]

What is BEST hardware for someone new?  And why?

wait for a bit i heard the s6 or s7 will be out in june-july.
more hashing power = easier ROI but we do have to consider the difficulty level too.

This is a guess.  We really do not know when S6 or S7 will be released.  

Whenever they do release it's safe to say they will follow releasing of S6 and wait a bit till S7.   But no one knows for sure when this will be.   If they follow suit S7 would need new chips, or more efficiency out of S5 chips.

[amelen]

By the way - spoke to Bitmain Tech, they are saying S7 will be announced and released in July. Still debating if to wait or not.

[philipma1957]

What is BEST hardware for someone new?  And why?

A question back what does your power cost>

If you are under 5 cents consider a used s-3.



If you are over 15 cents you will most likely lose no matter what you buy.

So the best miner becomes how much do you want to lose.
What does noise mean to you?
What is resale value?

In the 5 cent to 8 cent  zone  I would say an s-3  if you are a complete beginner. why? it is under 100 +  a psu

you can learn mining on a decent machine.

if you are are 8 to 11 cents and noise matters get the spondoolies sp20 and down clock it to keep it quiet.

from 11 to 15 cents and you do not care about  a loud miner the s-5 is okay.

[Xialla]

from 11 to 15 cents and you do not care about  a loud miner the s-5 is okay.

and if your price above 20 (like me) forget about mining forever.((

[notlist3d]

from 11 to 15 cents and you do not care about  a loud miner the s-5 is okay.

and if your price above 20 (like me) forget about mining forever.((

Sadly that would make home mining impossible.  You would have to look into either hosting or cloud mining if you ever wanted to mine.

With hosting you would still own equipment. Which could be nice.

[amelen]

What is BEST hardware for someone new?  And why?

A question back what does your power cost>

If you are under 5 cents consider a used s-3.



If you are over 15 cents you will most likely lose no matter what you buy.

So the best miner becomes how much do you want to lose.
What does noise mean to you?
What is resale value?

In the 5 cent to 8 cent  zone  I would say an s-3  if you are a complete beginner. why? it is under 100 +  a psu

you can learn mining on a decent machine.

if you are are 8 to 11 cents and noise matters get the spondoolies sp20 and down clock it to keep it quiet.

from 11 to 15 cents and you do not care about  a loud miner the s-5 is okay.

~11 cents in our office in NJ, ~10 cents in our data center in NJ, ~9 cents in our data center in the mid-west. Sound isn't an issue - I'm looking for a design that we can slightly improve (with cooling, overclocking, etc..) and scale. 2x S5 would seem to use as much power as an SP20 and get better results, no? (I realize the buy-in cost would be higher though). I wish they were still selling sp20's.. I saw some on ebay, but they were going for crazy prices.

[amelen]

I guess the biggest question I'm struggling with is to either jump in now, or wait 45 days for new equipment (S7). I guess there is always something new on the horizon, but I wouldn't want to spend R&D time and money on something that will be obsolete by the time we get it working right.

[Nixian]

from 11 to 15 cents and you do not care about  a loud miner the s-5 is okay.

and if your price above 20 (like me) forget about mining forever.((

Sadly that would make home mining impossible.  You would have to look into either hosting or cloud mining if you ever wanted to mine.

With hosting you would still own equipment. Which could be nice.

Did you look at my post about home miner ? What you think of that setup ?
https://bitcointalk.org/index.php?topic=1071741.0

[denisbaldwin]

If you're going to buy current hardware, I'd recommend the Antminer S5 bought used. I've had luck on ebay getting them in the $300 range used using the "Make An Offer" system.

That said, I'm holding off buying any more tech until the S7s come out. Given the way the development has trended, I expect them to be in the 2-3TH/s range and probably at the same price point as the S5s are selling for new (sub $400 range for Batch5).

Purely speculation of course, but it's the path I'm taking.

Denis

[amelen]

If you're going to buy current hardware, I'd recommend the Antminer S5 bought used. I've had luck on ebay getting them in the $300 range used using the "Make An Offer" system.

That said, I'm holding off buying any more tech until the S7s come out. Given the way the development has trended, I expect them to be in the 2-3TH/s range and probably at the same price point as the S5s are selling for new (sub $400 range for Batch5).

Purely speculation of course, but it's the path I'm taking.

Denis

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

[sidehack]

Look into server PSUs. You can probably get similar efficiency and reliability for cheaper.

[notlist3d]

Look into server PSUs. You can probably get similar efficiency and reliability for cheaper.

Also look into breakout boards and nice PCI-e cords if you do.  It will make your life much much easier getting all the parts.

I think new equipment will be after June I foresee current equipment being sold during then.  But I could be very wrong.

[denisbaldwin]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

[notlist3d]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Your doing what I wish all would do.  That is using quality power supplies.

It really does make your life easier in long run.  They are good for multiple miner generations.  And they save a little money compared to bronze.  Most should do this only reason I would consider using cheaper is if you had it already at your house and is decent gauge power cables.

[amelen]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

[notlist3d]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.   

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

[amelen]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.   

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

[philipma1957]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.   

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right. 
  run at stock speed  of 1150 

then do the second s-5 the same way.

[jeannemadrigal2]

Thanks for the info on the psu's Phillip.  BTW is there anywhere on the forums that has a psu round up?  I have not seen one.  Maybe I should check if the search is still broken   I got a corsair psu for my last computer and it is working great for several years now.  I never heard of Seasonic but I will keep them in mind for my next build.

[philipma1957]

Thanks for the info on the psu's Phillip.  BTW is there anywhere on the forums that has a psu round up?  I have not seen one.  Maybe I should check if the search is still broken   I got a corsair psu for my last computer and it is working great for several years now.  I never heard of Seasonic but I will keep them in mind for my next build.

Seasonic
Evga
Corsair

all of the above are good psu companies.

here are Great psu reviews below.

http://www.jonnyguru.com/

[denisbaldwin]

I have Seasonics in my S2s and they do just fine. I got the EVGA G2s because they were on sale at Black Friday, so I bought up 12 of them. The Antecs are equally good, and I actually like their cables a little better. I have 8 of the Antecs currently. Not a single dead power supply amongst them. One of the Antecs had a bad 12V leg, but I turned it over to RMA and got a new one in a few days.

For me, power efficiency is critical. I've stretched my home and colo power to the most I can pull, so efficiency is key.

Denis

[amelen]

I have Seasonics in my S2s and they do just fine. I got the EVGA G2s because they were on sale at Black Friday, so I bought up 12 of them. The Antecs are equally good, and I actually like their cables a little better. I have 8 of the Antecs currently. Not a single dead power supply amongst them. One of the Antecs had a bad 12V leg, but I turned it over to RMA and got a new one in a few days.

For me, power efficiency is critical. I've stretched my home and colo power to the most I can pull, so efficiency is key.

Denis

How cheap did you get them for BF?

[denisbaldwin]

I have Seasonics in my S2s and they do just fine. I got the EVGA G2s because they were on sale at Black Friday, so I bought up 12 of them. The Antecs are equally good, and I actually like their cables a little better. I have 8 of the Antecs currently. Not a single dead power supply amongst them. One of the Antecs had a bad 12V leg, but I turned it over to RMA and got a new one in a few days.

For me, power efficiency is critical. I've stretched my home and colo power to the most I can pull, so efficiency is key.

Denis

How cheap did you get them for BF?

I ended up getting the 1300G2s for around $100 each at TigerDirect on BF. I've since bought some other 1300G2s and some Antecs as either returned open stock (from Newegg), used (from Amazon and eBay) and I've had great luck with them all around.

Denis

[notlist3d]

I have Seasonics in my S2s and they do just fine. I got the EVGA G2s because they were on sale at Black Friday, so I bought up 12 of them. The Antecs are equally good, and I actually like their cables a little better. I have 8 of the Antecs currently. Not a single dead power supply amongst them. One of the Antecs had a bad 12V leg, but I turned it over to RMA and got a new one in a few days.

For me, power efficiency is critical. I've stretched my home and colo power to the most I can pull, so efficiency is key.

Denis

How cheap did you get them for BF?

I ended up getting the 1300G2s for around $100 each at TigerDirect on BF. I've since bought some other 1300G2s and some Antecs as either returned open stock (from Newegg), used (from Amazon and eBay) and I've had great luck with them all around.

Denis

Sounds like you are all set let us know how it goes!

Out of curiosity how big of discount did you get with open stock antec?  It sounds like I missed a deal

[denisbaldwin]

I think they were in the same $90-120 range when I got them. I have a TigerDirect near me so I got in there and look at their returned stuff. Usually marked down 40-60%.

Denis

[crazyivan]

Having in mind this low BTC price, I do not think there s much space for investment and development of new chips.

The entire industry needs to see price correction before new farms get turned on.

[amelen]

Having in mind this low BTC price, I do not think there s much space for investment and development of new chips.

The entire industry needs to see price correction before new farms get turned on.

Ehh, the best time to invest is usually during "down turns". There are a bunch of case studies & white papers on it, but take a look at Intel & AMD for example. Their R&D investment is usually highest during down turns (especially intel). Granted this industry isn't as big, but I think the same logic still applies.

[notlist3d]

Having in mind this low BTC price, I do not think there s much space for investment and development of new chips.

The entire industry needs to see price correction before new farms get turned on.

Ehh, the best time to invest is usually during "down turns". There are a bunch of case studies & white papers on it, but take a look at Intel & AMD for example. Their R&D investment is usually highest during down turns (especially intel). Granted this industry isn't as big, but I think the same logic still applies.

I would think R/D is a great time now.   Worst thing is btc is low so bad conversion time.  But overall good for the miner companies.

I think it is as there is not a rush.  It seemed before there was always a quick turnaround to get to the next generation.  Now they can spend smart and take extra time to make next gen chips (or just efficiency on old chips).    The first one with it will no doubt win the ROI war.  But they are all winners with low difficulty changes and miners running longer then a lot expected.

[amelen]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.  

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right.  
  run at stock speed  of 1150  

then do the second s-5 the same way.

Is this what you were suggesting? Does it look like I did it correctly? The double cables are plugged into the back of the units. My hardware error rate is a bit high, so either the PSU is struggling or I didn't setup the cables the right away.

[philipma1957]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.  

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right.  
  run at stock speed  of 1150  

then do the second s-5 the same way.

Is this what you were suggesting? Does it look like I did it correctly? The double cables are plugged into the back of the units. My hardware error rate is a bit high, so either the PSU is struggling or I didn't setup the cables the right away.

that is the correct way to do it.

next question is how high is error rate?  .5% or less?
and a suggestion or two:

1) do not point the s-5 hot air at the evga 1300 g2
2) if you are mining the s-5's at stock 1150gh try setting the freq 1 tick lower and mine around 1100gh to 1125gh.

Once you do the small under clock report back on error rate should be better with a slight underclock.

2 s-5's on the evga 1300g2 are close to max so a slight under clock should improve error rate.

[amelen]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.  

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right.  
  run at stock speed  of 1150  

then do the second s-5 the same way.

Is this what you were suggesting? Does it look like I did it correctly? The double cables are plugged into the back of the units. My hardware error rate is a bit high, so either the PSU is struggling or I didn't setup the cables the right away.

that is the correct way to do it.

next question is how high is error rate?  .5% or less?
and a suggestion or two:

1) do not point the s-5 hot air at the evga 1300 g2
2) if you are mining the s-5's at stock 1150gh try setting the freq 1 tick lower and mine around 1100gh to 1125gh.

Once you do the small under clock report back on error rate should be better with a slight underclock.

2 s-5's on the evga 1300g2 are close to max so a slight under clock should improve error rate.

Thank you! Yes, it was only pointed that way for the picture. Error rate is ~0.5%, but I can't tell if it's power related. I guess I'll play around with it - thanks!

[philipma1957]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.  

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right.  
  run at stock speed  of 1150  

then do the second s-5 the same way.

Is this what you were suggesting? Does it look like I did it correctly? The double cables are plugged into the back of the units. My hardware error rate is a bit high, so either the PSU is struggling or I didn't setup the cables the right away.

that is the correct way to do it.

next question is how high is error rate?  .5% or less?
and a suggestion or two:

1) do not point the s-5 hot air at the evga 1300 g2
2) if you are mining the s-5's at stock 1150gh try setting the freq 1 tick lower and mine around 1100gh to 1125gh.

Once you do the small under clock report back on error rate should be better with a slight underclock.

2 s-5's on the evga 1300g2 are close to max so a slight under clock should improve error rate.

Thank you! Yes, it was only pointed that way for the picture. Error rate is ~0.5%, but I can't tell if it's power related. I guess I'll play around with it - thanks!

each  s-5 and each evga 1300 g2 vary a little bit.

so your evga 1300 g2 matched with your 2 s-5's may work better with a slight under clock  lets say 1100gh.

also let the s-5's run for 4 hours or so before you decide the error rates are correct.

2200gh is about  159 usd a month

2300gh is about  166 usd a month

but if the  error rate drops from .5 to .1    that 7 dollar income loss is more like 5 or 6.

and the gear does not break as fast.

good luck

[amelen]

Good idea. Speaking of S5's - do you know if I can run 2 on a single EVGA SuperNOVA 1300G2 or Seasonic 1250? We have an investor willing to fund a pretty significant hardware purchase, so I've been in touch with Bitmain Tech and they have been very helpful with info.

I'm running my S5s, two per power supply, on a combination of EVGA SuperNOVA 1300G2s and Antec HCP-1300 Platinum 1300W power supplies. They work well on those power supplies, are decently efficient and the PS stays cool (including cool wires) even if I overclock the S5s a bit. My S5s are consistently in the 1.3TH/s to 1.35TH/s range with a slight overtune on these PS units and no issues at all.

Denis
 

Thank you! Exactly the info I was looking for. Thanks! Would you recommend one of those over the other or have they both performed similarly? Any experience with the Seasonic 1250?

I have not used that model, but Seasonic is a top notch company on PSU's so very good.  Both he mentioned are good.  

Honestly it depends on price if you can get the Antec he mentioned close to the EVGA I would go for the Antec ad get the platinum.  But decent pricing differen then I would go with EVGA.

Got it - thanks. The EVGA one is $169.99 now @newegg after rebate. Seems like a great price - I just wish it had 8 PCI-E connections like the Seasonic.

I have used:
 Seasonic 1200 plat
 Seasonic 1000 plat
 Seasonic    750 plat

I have used Evga 1300 g2
I have used Evga 1600 p2

And a lot of others.

the evga 1300 g2 is good gear.

 it has 6 pcie cables  4 with 1 plug and 2 with 2 plugs

you can do 2 single cables and 1 double cable to an s-5.

use a single left
a single right
and use a double on the left and right.  
  run at stock speed  of 1150  

then do the second s-5 the same way.

Is this what you were suggesting? Does it look like I did it correctly? The double cables are plugged into the back of the units. My hardware error rate is a bit high, so either the PSU is struggling or I didn't setup the cables the right away.

that is the correct way to do it.

next question is how high is error rate?  .5% or less?
and a suggestion or two:

1) do not point the s-5 hot air at the evga 1300 g2
2) if you are mining the s-5's at stock 1150gh try setting the freq 1 tick lower and mine around 1100gh to 1125gh.

Once you do the small under clock report back on error rate should be better with a slight underclock.

2 s-5's on the evga 1300g2 are close to max so a slight under clock should improve error rate.

Thank you! Yes, it was only pointed that way for the picture. Error rate is ~0.5%, but I can't tell if it's power related. I guess I'll play around with it - thanks!

each  s-5 and each evga 1300 g2 vary a little bit.

so your evga 1300 g2 matched with your 2 s-5's may work better with a slight under clock  lets say 1100gh.

also let the s-5's run for 4 hours or so before you decide the error rates are correct.

2200gh is about  159 usd a month

2300gh is about  166 usd a month

but if the  error rate drops from .5 to .1    that 7 dollar income loss is more like 5 or 6.

and the gear does not break as fast.

good luck

Thanks for the info! What's an acceptable error rate?

[amelen]

Here are how the error rates look at each frequency:

400 0.060%
375 0.040%
350 0.030%

Temp's seem to be around the same. I guess 375 is the best one to leave it at?

[chalkboard17]

Here are how the error rates look at each frequency:

400 0.060%
375 0.040%
350 0.030%

Temp's seem to be around the same. I guess 375 is the best one to leave it at?

I have same miner and same PSU. Unfortunately if you use the two cords of the double cable you will get more hardware error. At least that's what happened to me. If you really are looking for extreme efficiency it could be a idea to use 6 plugs (leave the two extras alone) instead of 8. In the end, you will have to do tests yourself as it depends on other things, too.
Leave it on for hours and go figuring what is best for you. Change the cables, use other schemes such as 3 normal cables and 1 that is doubled and so on.

My HW at 412.5 right now is 0.0045%. 1 miner, 1 psu, 4 normal cables no double on. 1360gh/s. I can get 1380gh/s with 425 and after that it starts to drop. From your HW I am going to guess after 387.5 you should start to get lower hashrate.

[amelen]

Here are how the error rates look at each frequency:

400 0.060%
375 0.040%
350 0.030%

Temp's seem to be around the same. I guess 375 is the best one to leave it at?

I have same miner and same PSU. Unfortunately if you use the two cords of the double cable you will get more hardware error. At least that's what happened to me. If you really are looking for extreme efficiency it could be a idea to use 6 plugs (leave the two extras alone) instead of 8. In the end, you will have to do tests yourself as it depends on other things, too.
Leave it on for hours and go figuring what is best for you. Change the cables, use other schemes such as 3 normal cables and 1 that is doubled and so on.

My HW at 412.5 right now is 0.0045%. 1 miner, 1 psu, 4 normal cables no double on. 1360gh/s. I can get 1380gh/s with 425 and after that it starts to drop. From your HW I am going to guess after 387.5 you should start to get lower hashrate.

Great ideas, thanks! I'm also trying to figure out some temp issues. One unit is running 60/60 right now, one at 64/51. Same exact fans - very strange. The unit at 64/51 is getting much higher hardware error rates.

[chalkboard17]

I also have temp diff between boards. You and I aren't the first people I see running into these problems lately. It's not normal, despite what many people will tell you.

[amelen]

I also have temp diff between boards. You and I aren't the first people I see running into these problems lately. It's not normal, despite what many people will tell you.

Strangely enough, I only started seeing the temp differences recently after swapping fans - I'll have to put the stock fan back on for further testing. I'm also not sure how accurate the temp readings are anyway since it's only 1 spot on the board. What difference in temp's are you seeing?

[chalkboard17]

Air conditioner + ceiling fan + night + nearly winter in southern hemisphere: 412.5 @ 1356 @ 55/47

[amelen]

Air conditioner + ceiling fan + night + nearly winter in southern hemisphere: 412.5 @ 1356 @ 55/47

Temp's aren't too bad - although the spread is almost as bad as mine. That's with a stock fan?

[philipma1957]

Here are how the error rates look at each frequency:

400 0.060%
375 0.040%
350 0.030%

Temp's seem to be around the same. I guess 375 is the best one to leave it at?

yeah the 375 looks pretty good for your machine

[chalkboard17]

Air conditioner + ceiling fan + night + nearly winter in southern hemisphere: 412.5 @ 1356 @ 55/47

Temp's aren't too bad - although the spread is almost as bad as mine. That's with a stock fan?

Yes. Arrived like that to me. Bought directly from bitmain.

[philipma1957]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

[amelen]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

[philipma1957]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

yes it is good.

just watch it to see if it declines .

if it drifts to 0.06 or 0.07 % no worries.   If it goes to 0.25% try a slight under clock.

there is no big worry unless they go to 1 or 2%

[amelen]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

yes it is good.

just watch it to see if it declines .

if it drifts to 0.06 or 0.07 % no worries.   If it goes to 0.25% try a slight under clock.

there is no big worry unless they go to 1 or 2%

Thank you! Will do further testing with some new fans today. I've gotten it pretty stable at 0.05-0.06%. One of the tricks, especially with 2 S5's sharing a single PSU (EVGA G2 1300) has been to put the fans on separate connections to the PSU instead of running off the S5's themselves. That way they are not sharing the power over the same cables. This helped errors come down a good amount - especially with the stock fans that are rated at 2amps each.

[philipma1957]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

yes it is good.

just watch it to see if it declines .

if it drifts to 0.06 or 0.07 % no worries.   If it goes to 0.25% try a slight under clock.

there is no big worry unless they go to 1 or 2%

Thank you! Will do further testing with some new fans today. I've gotten it pretty stable at 0.05-0.06%. One of the tricks, especially with 2 S5's sharing a single PSU (EVGA G2 1300) has been to put the fans on separate connections to the PSU instead of running off the S5's themselves. That way they are not sharing the power over the same cables. This helped errors come down a good amount - especially with the stock fans that are rated at 2amps each.

how has your gear worked for you over the last few weeks I figured I would follow up.

[MarkAz]

Great ideas, thanks! I'm also trying to figure out some temp issues. One unit is running 60/60 right now, one at 64/51. Same exact fans - very strange. The unit at 64/51 is getting much higher hardware error rates.

I have 24 S5's that I use as my test setup, and on average I see a 1-2c difference between blades, no real rhyme or reason towards which side is hotter, etc.  In almost all cases, if I see a big temperature variance, then I remove the heat sink from the high temperature board, re-apply thermal paste, and this brings them right back in line.  Since you just bought yours, if you want to do this make sure to run it by Bitmain before doing so, so it doesn't invalidate your warranty.

[amelen]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

yes it is good.

just watch it to see if it declines .

if it drifts to 0.06 or 0.07 % no worries.   If it goes to 0.25% try a slight under clock.

there is no big worry unless they go to 1 or 2%

Thank you! Will do further testing with some new fans today. I've gotten it pretty stable at 0.05-0.06%. One of the tricks, especially with 2 S5's sharing a single PSU (EVGA G2 1300) has been to put the fans on separate connections to the PSU instead of running off the S5's themselves. That way they are not sharing the power over the same cables. This helped errors come down a good amount - especially with the stock fans that are rated at 2amps each.

how has your gear worked for you over the last few weeks I figured I would follow up.

I wound up going back to the stock fans but under-volting them to reduce power usage and help with the sound. The error rate is still not great, but seems to be PSU related. The EVGA 1300 is capable of running 2 S5's, but it definitely starts to strain even with a slight over clocking. I'm still playing around with some designs but also waiting to see what the specs on the S7 will look like.

[philipma1957]

try setting the units on a thin mat. i had some silicone sheets.

i set the silicone sheet onto a flat floor then the s-5 onto the sheet.

thus all air pushes through the s-5 no air leaks out of the bottom sides.

some of that air goes up to the top giving 1 or deg cooler.

as long as the boards are under 65 it seems to be okay.

i got 58-62 with good errors

What would you define as good errors? I'm getting 0.05% now, is that considered acceptable?

yes it is good.

just watch it to see if it declines .

if it drifts to 0.06 or 0.07 % no worries.   If it goes to 0.25% try a slight under clock.

there is no big worry unless they go to 1 or 2%

Thank you! Will do further testing with some new fans today. I've gotten it pretty stable at 0.05-0.06%. One of the tricks, especially with 2 S5's sharing a single PSU (EVGA G2 1300) has been to put the fans on separate connections to the PSU instead of running off the S5's themselves. That way they are not sharing the power over the same cables. This helped errors come down a good amount - especially with the stock fans that are rated at 2amps each.

how has your gear worked for you over the last few weeks I figured I would follow up.

I wound up going back to the stock fans but under-volting them to reduce power usage and help with the sound. The error rate is still not great, but seems to be PSU related. The EVGA 1300 is capable of running 2 S5's, but it definitely starts to strain even with a slight over clocking. I'm still playing around with some designs but also waiting to see what the specs on the S7 will look like.

I am also awaiting the s-7.  Sounds like you run the stock fans directly from the psu. this is smart if you do that as it will avoid this problem

see link:

https://bitcointalk.org/index.php?topic=1102596.0

[QuintLeo]

When I got my first 3 S5s, I did some fairly substantial testing on them. I find they vary some from one to the next, one was soaking 620 watts at the wall the other two were under 610, when stock clocked. All were stock frequency running on the same Seasonic X-1250 and being measured by the same Brand power meter at the time. They all run a little different on temps, all with stock fan and the PWM lead disabled to keep the fans running at max all the time.

 There is always some small variation from one chip to the next of the same design, process variations add up.

[amelen]

When I got my first 3 S5s, I did some fairly substantial testing on them. I find they vary some from one to the next, one was soaking 620 watts at the wall the other two were under 610, when stock clocked. All were stock frequency running on the same Seasonic X-1250 and being measured by the same Brand power meter at the time. They all run a little different on temps, all with stock fan and the PWM lead disabled to keep the fans running at max all the time.

 There is always some small variation from one chip to the next of the same design, process variations add up.

You're running 2 machines from a Seasonic X-1250 or 1?

[QuintLeo]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

[alh]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

I would guess that you are right in the "sweet spot" for the PSU efficiency range, and should run "forever" that way (assuming you pay the electric bill). 

Your choices sound quite reasonable to me.

[QuintLeo]

50% load is actually the "sweet spot" on most Gold power supplies, but 70-80% is usually close enough.
 
 8-)


 As it is, the output air from my Seasonics is warm, but not very warm - and the fan doesn't seem to be spinning very fast. With a single S5, the fan was taking a while to kick on at all....

[Amph]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

[amelen]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

[philipma1957]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

looks like 8

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139079&cm_re=corsair_psu-_-17-139-079-_-Product


but the evga 1600 has 9  separate  pcie cables . and a 10 year warranty


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438037&cm_re=evga_psu-_-17-438-037-_-Product

I own one of the evga's  nice gear.

[QuintLeo]

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

[amelen]

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

I have the EVGA 1300 gold, no complaints. However, I remember when I looked at the EVGA 1600, it had a lot more PCI-e cords which would probably solve the double cable issue on the 1300.

[QuintLeo]

But have you looked at the PRICE on the EVGA 1600 gold?

 *wince*

 IIRC I can almost get 2 Seasonic X-1250s for the cost of ONE 1600.
 DEFINITELY 1.5

[amelen]

But have you looked at the PRICE on the EVGA 1600 gold?

 *wince*

 IIRC I can almost get 2 Seasonic X-1250s for the cost of ONE 1600.
 DEFINITELY 1.5

$315 after rebate, includes 10 year warranty:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817438033

Pricey, but not too bad. It says it includes 14 PCI-e cables.

The 1300 was definitely a better value, I think I paid ~$170 after rebate.

[Amph]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

looks like 8

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139079&cm_re=corsair_psu-_-17-139-079-_-Product


but the evga 1600 has 9  separate  pcie cables . and a 10 year warranty


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438037&cm_re=evga_psu-_-17-438-037-_-Product

I own one of the evga's  nice gear.

8 right, but remember that you can use the other connectors for the two ways molex pci-e adapter, and there are six peripheral sata there, each one can support up to 132x2, because one 4 pin molex support  around 132w

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

never had any issue with them, my 750 gold runs extremely smooth and fine since 2011, also they were using seasonic in the past as a manufacturer, but for their recent models they switched to flextronics

[scarsbergholden]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

looks like 8

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139079&cm_re=corsair_psu-_-17-139-079-_-Product


but the evga 1600 has 9  separate  pcie cables . and a 10 year warranty


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438037&cm_re=evga_psu-_-17-438-037-_-Product

I own one of the evga's  nice gear.

8 right, but remember that you can use the other connectors for the two ways molex pci-e adapter, and there are six peripheral sata there, each one can support up to 132x2, because one 4 pin molex support  around 132w

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

never had any issue with them, my 750 gold runs extremely smooth and fine since 2011, also they were using seasonic in the past as a manufacturer, but for their recent models they switched to flextronics

i have seen a good amount of people using serve grade powersupplies since they are build to run 24/7 so they are most likely to preform better are some points, i havent use them my self but from what i have seen they are pretty well build.

[philipma1957]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

looks like 8

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139079&cm_re=corsair_psu-_-17-139-079-_-Product


but the evga 1600 has 9  separate  pcie cables . and a 10 year warranty


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438037&cm_re=evga_psu-_-17-438-037-_-Product

I own one of the evga's  nice gear.

8 right, but remember that you can use the other connectors for the two ways molex pci-e adapter, and there are six peripheral sata there, each one can support up to 132x2, because one 4 pin molex support  around 132w

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

never had any issue with them, my 750 gold runs extremely smooth and fine since 2011, also they were using seasonic in the past as a manufacturer, but for their recent models they switched to flextronics

i have seen a good amount of people using serve grade powersupplies since they are build to run 24/7 so they are most likely to preform better are some points, i havent use them my self but from what i have seen they are pretty well build.

two of these will bitch slap  the evga 1600 or the corsair 1500 or any seasonic

http://www.gigampz.com/store/p21/Gigampz_80Plus_Platinum_Efficiency%2C_1200_Watt_Kit.html

and cost = 226 for the two.  note he is a usa seller and will take paypal.  I reviewed his gear here.

direct compared to the evga 1600 plat  which is 3x the price

https://bitcointalk.org/index.php?topic=985163.0

[amelen]

I'm actually, in final configuration, running 3 S5s from a pair of X1250s (I'm very conservative about power supplies, and like things to run COOL for longevity).

 When I was initially TESTING them, I was running one at a time solo on a X1250.

isn't better to go with 1500w corsair? which has an efficiency even above platinum level? this for two s5 only of course but maybe it's better to attach the s4+ with it, so you can saturate almost the whole wattage and have a better hash per watt

it would cost less than two seasonic of 1250w, around 500 euro vs 400

How many PCI-e cables does that corsair come with?

looks like 8

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139079&cm_re=corsair_psu-_-17-139-079-_-Product


but the evga 1600 has 9  separate  pcie cables . and a 10 year warranty


http://www.newegg.com/Product/Product.aspx?Item=N82E16817438037&cm_re=evga_psu-_-17-438-037-_-Product

I own one of the evga's  nice gear.

8 right, but remember that you can use the other connectors for the two ways molex pci-e adapter, and there are six peripheral sata there, each one can support up to 132x2, because one 4 pin molex support  around 132w

I don't trust Corsair nearly as well as I trust Seasonic. Corsair does NOT make any of their own power supplies, never has - Seasonic DOES and in fact is a OEM for other brands as well.

 If I went with anything else, it would be the EVGA 13000 gold units a lot of other folks use - but only 6 PCIE cables (granted 2 of them have 2 connectors each) and the gauge of the cables doesn't look any bigger than the *8* Seasonic has..... dunno.

 Seasonic has a better rep overall than EVGA does, but it's at least a fairly close competition there. Corsair isn't in the same ballpark on a LOT of their power supplies.

never had any issue with them, my 750 gold runs extremely smooth and fine since 2011, also they were using seasonic in the past as a manufacturer, but for their recent models they switched to flextronics

i have seen a good amount of people using serve grade powersupplies since they are build to run 24/7 so they are most likely to preform better are some points, i havent use them my self but from what i have seen they are pretty well build.

two of these will bitch slap  the evga 1600 or the corsair 1500 or any seasonic

http://www.gigampz.com/store/p21/Gigampz_80Plus_Platinum_Efficiency%2C_1200_Watt_Kit.html

and cost = 226 for the two.  note he is a usa seller and will take paypal.  I reviewed his gear here.

direct compared to the evga 1600 plat  which is 3x the price

https://bitcointalk.org/index.php?topic=985163.0

I'll definitely consider a server PSU next time around, but for my current needs, the EVGA 1300 was only $50 more and comes with a 10 year warranty, 8 PCI-E cables, and extra misc cables (I run the fans from the molex). I know these are platinum, but the 1300 GOLD is still a fairly good value for what you get, even compared to these. The 10 year warranty itself I think is pretty important if you're running the PSU near capacity 24/7.

[QuintLeo]

The server grade PSs are not bad at all, but LONG term I figure on using the seasonics in actual computers once bitcoin mining gets to the point you CAN'T mine profitably as a non-big-company major farm operator.

 I was actually doing research a year or so back based on computer builds to work on Distributed.Net (RC5), GIMPS (Mersenne Primes), and Folding@Home (+ curecoin, might as well get a pittance for doing what I was gonna do anyway) at the same time, and the Seasonics are what my research decided on.

 AMD A10 (GPU running Dnetc, CPU cores running Prime95), 3x GTX970s (or whatever was going to be comparable at the time) for the folding.


 Just turned out to be a research timesaver that the most common power supplies used in SHA256 and Scrypt mining were some of the SAME ones I'd already done the research on.

 8-)