ANTMINER S2 Discussion and Support Thread

[visdude]

for person not sure about PSU can't supply S2.. Please read my analyze

PSU S2 using : 1000W produced by Enermax, 80PLUS gold
This link about this PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817194101

wrote in datasheet : +12V1@30A, +12V2@30A, +12V3@30A, +12V4@30A

So this PSU can supply 4 x 30 A = 120 Ampere
This PSU can supply = 12 x 120 = 1440 Watt

S2 need 1000 Watt.. So this PSU can supply S2..

Did you bother checking the total maximum DC output on the 12V rail that's printed on the label?



Perhaps this would help also:

http://www.plugloadsolutions.com/psu_reports/ENERMAX%20TECHNOLOGY%20CORP_ERV1000EWT-G_ECOS%202840_1000W_Report.pdf

[bitcoin_miner]

for person not sure about PSU can't supply S2.. Please read my analyze

PSU S2 using : 1000W produced by Enermax, 80PLUS gold
This link about this PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817194101

wrote in datasheet : +12V1@30A, +12V2@30A, +12V3@30A, +12V4@30A

So this PSU can supply 4 x 30 A = 120 Ampere
This PSU can supply = 12 x 120 = 1440 Watt

S2 need 1000 Watt.. So this PSU can supply S2..

Did you bother checking the total maximum DC output on the 12V rail that's printed on the label?



Perhaps this would help also:

http://www.plugloadsolutions.com/psu_reports/ENERMAX%20TECHNOLOGY%20CORP_ERV1000EWT-G_ECOS%202840_1000W_Report.pdf

I not yet read in body PSU..
now waiting bitmaintach confirmation about it

[visdude]

Manufacturers tend to underrate power consumption for marketing purposes.  Bitmain's spec for the S1 is 360W at the wall but in actuality, it draws around 385W.  If the S1 is any indication, I would not be surprised if the S2 would draw more than 1000W at the wall as specified, hence all the more reason why a 1000W PSU is not ideal for a sustained 24/7 operation.

[freebit13]

A rule of thumb is exactly what is sounds like... after what Bitmain has done with the S1, completely blasting the competition out of the water, do you all think they are going to screw up such a simple little thing like supplying a psu that will blow up in your house? Even a newbie like me can figure out what size psu one 'should' use, but they are actually testing them which kinda holds more ground that a rule of thumb... imo of course.

It's not a rule of thumb.  It's called Physics.  Specs are not mere random numbers and are provided for a reason.  If you wanna load your PSU close to 100% load, then knock yourself out.

Ford blasted the competition too at one point or another but then they also made the Pinto.

You did not say it was a rule of thumnb, did I say you said it was a rule of thumb?, someone else said so, I'm not sure why you feel I was adressing you. I was merely highlighting the fact that a lot of people here go on what others have posted and pass on information without having ever tested it themselves. I'm running one OC ant on a 520W bronze psu that everyone 'says' should hav blown up long ago.

BTW: a 1000W PSU pulling 1000W at the wall is not running at 100%, please don't misrepresent the facts. A 1000W PSU pulling 1000W at the wall is operating at 92% if you're lucky, probably less... for someone so into physics and numbers, that's quite a difference.

It's also hardly fair to comapre a modern Chinese ASIC manufacturer to a 100 year old American car manufacturer... even if it does appear to support your argument.

[visdude]

A rule of thumb is exactly what is sounds like... after what Bitmain has done with the S1, completely blasting the competition out of the water, do you all think they are going to screw up such a simple little thing like supplying a psu that will blow up in your house? Even a newbie like me can figure out what size psu one 'should' use, but they are actually testing them which kinda holds more ground that a rule of thumb... imo of course.

It's not a rule of thumb.  It's called Physics.  Specs are not mere random numbers and are provided for a reason.  If you wanna load your PSU close to 100% load, then knock yourself out.

Ford blasted the competition too at one point or another but then they also made the Pinto.

You did not say it was a rule of thumnb, did I say you said it was a rule of thumb?, someone else said so, I'm not sure why you feel I was adressing you. I was merely highlighting the fact that a lot of people here go on what others have posted and pass on information without having ever tested it themselves. I'm running one OC ant on a 520W bronze psu that everyone 'says' should hav blown up long ago.

BTW: a 1000W PSU pulling 1000W at the wall is not running at 100%, please don't misrepresent the facts. A 1000W PSU pulling 1000W at the wall is operating at 92% if you're lucky, probably less... for someone so into physics and numbers, that's quite a difference.

It's also hardly fair to comapre a modern Chinese ASIC manufacturer to a 100 year old American car manufacturer... even if it does appear to support your argument.

I doesn't matter who said what or who quoted who.  I responded to your post which is about the current topic of discussion (S2 power supply).  This is an open forum after all.  I never mentioned anything "blowing up".  You did.  Like I said, knock yourself out if your PSU loading works for you.  I couldn't care less.

I haven't misrepresented the facts.  In fact, I have been stating facts.  You obviously do not bother to read prior posts.  Read here.

It is foolish to assume that Bitmain is so perfect that they will never screw up or never cut corners just because they are "completely blasting the competition out of the water".  That's bordering on fanaticism.

[gentacomp]

Enermax is one of the best PSU...

A 1000 watt can do more than it is, while the real spec is the recomend as it is. For Q can it for S2 ? My answer is YES it can. But I dont know in the long run 24/7/30/365. My 700 watt cant supply 600 watt rig after 2 years and it runs in average 15 hours a day, can you imagine for 24 hours a day ?

Further more a PSU durability dont just loss at significan range, it will drop just a little watt. I dont know its true, but will S2 do more error if the PSU only supply under 1000 watt ? Ex : its going down to 975 watt, than what happen ? Good if S2 just shutdown, but what if S2 got more error or broken chip ? Ussually it does little by little, so you wont notice it. That state just like a 1000 watt S2 overclocked and need 1100 watt but PSU still 1000 watt. For what I read (not my experience) it will do more error...

I hope this "5x S1 overclocked to 200 with low power" a.k.a S2, will give more hash rate than 1 TH. Yes I want price down LOL
Thank you...

[jelin1984]

If I want a refund what I must do?

[Pug]

-

[Pieh0]

If I want a refund what I must do?

Read the previous posts that replied to your post, such as...

According to the web site:..."All Sales are FINAL...due to the nature of this Market..."...blah, blah...

Sorry, buddy...NO refunds...I guess...

Edit: Doesn't mean that you can not try...Just ask them...

[nikolaz]

Also does anyone know
If I want a refund
Did bitmain did refund or not?

According to the web site:..."All Sales are FINAL...due to the nature of this Market..."...blah, blah...

Sorry, buddy...NO refunds...I guess...

Edit: Doesn't mean that you can not try...Just ask them...

Just had a look at their website, there was no mention of refund policy... I am in a very weird situation, I need to relocate to Canada for work, which is good as I will save $0.12 kW/h compare to the UK ($0.18 kW/h) however downside is I need to ship all my miners to Canada from UK and I am sure customs will have an issue moving 10xS1, and 2xS2 :-(

[faxfan2002]

Why would they have an issue? Your not selling or trading them just moving your own personal property.

[nikolaz]

Why would they have an issue? Your not selling or trading them just moving your own personal property.

I believe you will need to declare your items, It will be a hard sell to an custom officer that I have 12 "computers" for personal use.

[ineedit]

Hope their will be a Cina Export sticker   aka. CE Sign on the rack. The German customs sometimes are really mad.

I think that you mean a  "Conformité Européene" CE approval mark rather than a "China Export" sticker.

But I know what you mean, if it is a completed end user device then it is likely to need CE approval before Customs let it in although the PSU's should already have them.

[Tikii]

Also does anyone know
If I want a refund
Did bitmain did refund or not?

According to the web site:..."All Sales are FINAL...due to the nature of this Market..."...blah, blah...

Sorry, buddy...NO refunds...I guess...

Edit: Doesn't mean that you can not try...Just ask them...

Just had a look at their website, there was no mention of refund policy... I am in a very weird situation, I need to relocate to Canada for work, which is good as I will save $0.12 kW/h compare to the UK ($0.18 kW/h) however downside is I need to ship all my miners to Canada from UK and I am sure customs will have an issue moving 10xS1, and 2xS2 :-(

Depending where you are moving in Canada you might even get what they call Smart billing where you get charged less per kW in off peak times
IE: 10PM to 5AM = 0.07kW/h

[philipma1957]

I feel that Bitmain is skimping on the PSU.  Assuming that they're using Enermax ERV1000EWT-G 80 Plus Gold which is approximately 90% efficient at around full load (996W or 83A total on the 12V rail), the S2 would be drawing around 900WDC (1000WAC at the wall*90%) from this PSU.  That's a 90% (900W/996W) continuous load 24/7.  That's too close for comfort.  A 1200W PSU (75% load) would be more appropriate.  Personally, I prefer a 1500W PSU (60% load) for the S2; much closer to peak efficiency which is at 50% load.

Bitmain should offer an option to sell the S2 without a power supply at an appropriately reduced price so we could supply our own PSU just like with the S1s or get rid of the relatively puny 1000-Watter and use at least a 1200W premium PSU.  The cost difference for them shouldn't be that much especially when purchased in bulk.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817194101

yeah I don't need his psu nor do I want it.  I have lots of quality 1000 and 1200 watt psu's they are running his s-1's

I want a solid discount for one without a psu.  BTW this also would allow them to say the gear does not work and needs psu repairs to work thus allowing them to legally use a lower value to ship to the EU.

  So bitmain I know you would be stuck a shit load of psu's if you do this, but the truth is for many of us we just do not need the psu!

[dogie]

Guys calm down about the PSU. I've ordered an S2 and will do a setup guide and review - if it burns my flat down then I'll let you know

In all seriousness, I'll obviously check power consumption and PSU spec'ing.

[philipma1957]

Guys calm down about the PSU. I've ordered an S2 and will do a setup guide and review - if it burns my flat down then I'll let you know

In all seriousness, I'll obviously check pwoer consumption and PSU spec'ing.

so if it is 800 watts at the wall  it will work for quite a while. 

I have used two 1000 watt plat  seasonic's pulling 770 watts for 14 months .

but lets say that is the case that it pulls 800-820 watts doing 990gh.

 I still don't need his psu as I have 1 x 1000 watt seasonic plat and 3 fractal design newton r3 plat 1000 watt psu's in my home. I also have a 1200 watt psu from corsair.

  So the unit is at least 200usd  more for the psu + more to ship due to the extra weight. 

[klondike_bar]

Guys calm down about the PSU. I've ordered an S2 and will do a setup guide and review - if it burns my flat down then I'll let you know

In all seriousness, I'll obviously check pwoer consumption and PSU spec'ing.

+1.  Stop getting your panties in a knot over vague technical specifications. Bitmain has a prototype right now (that i assume works just fine) so it seems VERY unlikely they would be stupid enough to skimp on the PSU rather then be smart and install a power supply that has some headroom. They are not tech-illiterate, and the S1 proved that handily.

I imagine that Bitmain has arranged some sort of deal with enermax that they will buy PSUs in bulk, within china, and get very good cost, high quality models. Even with the extra shipping weight it probably works out cheaper then letting customers buy one on delivery - and might be partially influenced by the forum threads full of people complaining about their units malfunctioning [because they are trying to use <500W power supplies]

I use server supplies for a lot of my gear, which gives me 1000W for about $30 + an hour of my time (getting the supply, testing it, soldering cables, testing it again, praying its not one with a screaming 2000RPM fan, etc), but I have no issues with a supply being included if the quality and price are right.

[btcctb]

Antminer S1 currently mine at about 0.0204462 BTC per day without overclocking. 
(Current Difficulties: 4,250,217,920)
*Pool luck may increase or decrese the mining rate.

Am I right if I say that Antminer S2 will mine at about 0.1 BTC/day, because that would mean that it will take 57 days to ROI. So for those getting these miners on 15 April it will take 2 months to ROI...

Please correct me if im wrong

[kendog77]

Antminer S1 currently mine at about 0.0204462 BTC per day without overclocking.  
(Current Difficulties: 4,250,217,920)
*Pool luck may increase or decrese the mining rate.

Am I right if I say that Antminer S2 will mine at about 0.1 BTC/day, because that would mean that it will take 57 days to ROI. So for those getting these miners on 15 April it will take 2 months to ROI...

Please correct me if im wrong

You're very wrong. You need to factor in difficulty increases, and these miners won't even be mining for a month. By the time you get one, they only be getting ~.07 BTC per day, and the difficulty will continue to go up 10-20% every 11 to 12 days.

Based on the current price of the S2 and a mid April delivery date, these things will be lucky to ROI in BTC in 6 months...