ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH

[NaDMaN]

is it possible have 4 blades connected to 1 controller?

Why do you want to do that?  save a bit of power?  or you have extra boards?  can you you use different boards? Please let me know. Thanks!

[Tupsu]

is it possible have 4 blades connected to 1 controller?

Why do you want to do that?  save a bit of power?  or you have extra boards?  can you you use different boards? Please let me know. Thanks!

You can do like this

[dogie]

Even if they don't have two fan's it could always be added.   Granted if it's designed with a case that covers on all sides it will be more effective.

I dunno, i have read this thread a lot about the covers, and i even went and did one plastic cover to test it out. It caused all the temperatures to rise by 4-6 ºC, and i have them on a/c the closest i can to the ground. Let the miners stabilize for 5 minutes on each test.

It seems the engineering team did right using an uncovered-on-the-top design.

i think the problem with the s5 is the temp sensors are on the outside of the board on the other side of the chips that are making the heat.
the temps are not very accurate..

I would tend to agree with that, when we see temps go up and down we don't get a good sense if that is just one side, board components, chips, all chips etc. What we do know is that taping up the top and bottom does tend to help by a few C though. Not much and probably not enough to care, but it follows the theory.

[TrevorS]

I see that many people have problems with the pcb s5, often go out, and you have to restart 2/3 times a day, I hope bitmain find a solution to this problem, it is suicidal to restart continuously miners

I actually have done pretty good the past week with mine.  Normally I was going 1 or 2 times a week to reset.  Now Ive went 3/4th of a week without needing to.

Cant say anything caused it just luck, but I hope it keeps going.

FWIW -- I've gone several weeks now with no issues with my six S5.  The temp outside and especially inside has risen considerably (me in my drawers), and yet they've hung in quite well, not yet exceeding 63C.  Of course, I changed the fans and dropped the clock to now 312.5MHz, but fact is, I've been expecting temp complaints -- haven't happened.  I use switched Westhash and haven't experienced any lockups since raising the clock from 306.25MHz to 312.5.  I did experience one situation where the reported temp rose to and exceeded 80C on two miners, but power cycling plus cool-off period corrected the problem, hasn't re-occurred.  So, I don't know if I'm just being lucky or what, but although the S3 is clearly a more bullet proof beast, the S5 is currently doing well for me.

[notlist3d]

I see that many people have problems with the pcb s5, often go out, and you have to restart 2/3 times a day, I hope bitmain find a solution to this problem, it is suicidal to restart continuously miners

I actually have done pretty good the past week with mine.  Normally I was going 1 or 2 times a week to reset.  Now Ive went 3/4th of a week without needing to.

Cant say anything caused it just luck, but I hope it keeps going.

FWIW -- I've gone several weeks now with no issues with my six S5.  The temp outside and especially inside has risen considerably (me in my drawers), and yet they've hung in quite well, not yet exceeding 63C.  Of course, I changed the fans and dropped the clock to now 312.5MHz, but fact is, I've been expecting temp complaints -- haven't happened.  I use switched Westhash and haven't experienced any lockups since raising the clock from 306.25MHz to 312.5.  I did experience one situation where the reported temp rose to and exceeded 80C on two miners, but power cycling plus cool-off period corrected the problem, hasn't re-occurred.  So, I don't know if I'm just being lucky or what, but although the S3 is clearly a more bullet proof beast, the S5 is currently doing well for me.

I have one that at one point it seemed about once a week I would reset it.  It's gone around a month now without a reset.   

So I'm pretty happy with it currently.

[chalkboard17]

Here is my opinion on my first s5 if anybody is looking for one: https://bitcointalk.org/index.php?topic=1063402.msg11413222#msg11413222

[notlist3d]

Here is my opinion on my first s5 if anybody is looking for one: https://bitcointalk.org/index.php?topic=1063402.msg11413222#msg11413222

Some of it is kinda rediclous.  No legit company will falsify invoices to lower your taxes.   You should have known that when ordering from a legit company.

I highly suggest you looking into hosting if you ever buy another miner.  Your import tax of over 100 percent would kill any asic deal from a good company.

[chalkboard17]

Here is my opinion on my first s5 if anybody is looking for one: https://bitcointalk.org/index.php?topic=1063402.msg11413222#msg11413222

Some of it is kinda rediclous.  No legit company will falsify invoices to lower your taxes.   You should have known that when ordering from a legit company.

I highly suggest you looking into hosting if you ever buy another miner.  Your import tax of over 100 percent would kill any asic deal from a good company.

Is it also ridiculous to receive 14c warmer equipment?

[notlist3d]

Here is my opinion on my first s5 if anybody is looking for one: https://bitcointalk.org/index.php?topic=1063402.msg11413222#msg11413222

Some of it is kinda rediclous.  No legit company will falsify invoices to lower your taxes.   You should have known that when ordering from a legit company.

I highly suggest you looking into hosting if you ever buy another miner.  Your import tax of over 100 percent would kill any asic deal from a good company.

Is it also ridiculous to receive 14c warmer equipment?

It seems to he hashing fine.  I would guess the one that say's 38 could be off unless very cold, the near 50 one seems more "normal".

But as long as it's hashing and has one accurate one to stop it if it reaches to hot, I would might not be perfect but is working fine it seems from hash.

[tokingtoking]

someone here did suggest us to underclock s5.
because of curious i did underclock my s5 and s3.
at some point (1 0r 2 step below stock) doesnt affected hashrate.
CMIIW.
now, for s5 i did 2 step below stock and 1 step below stock for s3.i will let it run for a week to review payout.

[TTravis]

I just read an article talking about possibly increasing the block size from 1MB to 20MB.

http://www.technologyreview.com/news/537486/leaderless-bitcoin-struggles-to-make-its-most-crucial-decision/

I have heard talk of this before but am wondering if the S5 would handle this without modification.  Hopefully it will.

Tom

[chiguireitor]

I just read an article talking about possibly increasing the block size from 1MB to 20MB.

http://www.technologyreview.com/news/537486/leaderless-bitcoin-struggles-to-make-its-most-crucial-decision/

I have heard talk of this before but am wondering if the S5 would handle this without modification.  Hopefully it will.

Tom

Block size and mining (the act of finding the nonce that fits the difficulty) are two separate concerns. No action is needed.

[jstefanop]

Where did I read that someone had a firmware hack that changed the stock fan speed profile?

[Rabinovitch]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price? 

[Xian01]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price?  

I'm not really surprised they've held firm at the $340 price for so long - They are the only game in town at present, and can charge whatever they want for their products.

I not a fan of such arrogant behaviour.

As a result, for the last few months, I've been taking advantage of the low BTC/USD pricing, and every time I think about buying another miner, I just buy 1BTC instead on Coinbase and think to myself "Now wasn't that easier and more cost-effective ?"

Given the current price of ~$235 USD/BTC, it doesn't make any financial sense purchasing miners at their current pricing. An S5 priced at $340 is presently looking @ ~1year of runtime for ROI, excluding electrical and power supply costs.

It doesn't make any sense at all to buy Bitmain products, presently - A ROI will be difficult and uncertain.

[dogie]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price? 

Shipping is ~cost, its unlikely to change any time soon unless UPS / DHL lower their prices.

[Bicknellski]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price?  

I'm not really surprised they've held firm at the $340 price for so long - They are the only game in town at present, and can charge whatever they want for their products.

I not a fan of such arrogant behaviour.

As a result, for the last few months, I've been taking advantage of the low BTC/USD pricing, and every time I think about buying another miner, I just buy 1BTC instead on Coinbase and think to myself "Now wasn't that easier and more cost-effective ?"

Given the current price of ~$235 USD/BTC, it doesn't make any financial sense purchasing miners at their current pricing. An S5 priced at $340 is presently looking @ ~1year of runtime for ROI, excluding electrical and power supply costs.

It doesn't make any sense at all to buy Bitmain products, presently - A ROI will be difficult and uncertain.

Uncertain for sure. 

[klondike_bar]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price?  

I'm not really surprised they've held firm at the $340 price for so long - They are the only game in town at present, and can charge whatever they want for their products.

I not a fan of such arrogant behaviour.

As a result, for the last few months, I've been taking advantage of the low BTC/USD pricing, and every time I think about buying another miner, I just buy 1BTC instead on Coinbase and think to myself "Now wasn't that easier and more cost-effective ?"

Given the current price of ~$235 USD/BTC, it doesn't make any financial sense purchasing miners at their current pricing. An S5 priced at $340 is presently looking @ ~1year of runtime for ROI, excluding electrical and power supply costs.

It doesn't make any sense at all to buy Bitmain products, presently - A ROI will be difficult and uncertain.

+1. the prices are a bit high, yet understandable.
1) theres minimal competition
2) theres a strong market within china (where the shipping cost is <40% of sending overseas)
3) The units could be profitable for those with <7c/kwh power (especially if located in china and saving a large chunk of the shipping cost)

to be entirely honest, its all a gamble. If BTCUSD rises, mining returns will increase and hashrate will follow. However, theres a good chance that if BTC were to rise 4x in price in the next 12 months, difficulty would likely struggle to keep up since theres limited new production at the moment.

[notlist3d]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price?  

I'm not really surprised they've held firm at the $340 price for so long - They are the only game in town at present, and can charge whatever they want for their products.

I not a fan of such arrogant behaviour.

As a result, for the last few months, I've been taking advantage of the low BTC/USD pricing, and every time I think about buying another miner, I just buy 1BTC instead on Coinbase and think to myself "Now wasn't that easier and more cost-effective ?"

Given the current price of ~$235 USD/BTC, it doesn't make any financial sense purchasing miners at their current pricing. An S5 priced at $340 is presently looking @ ~1year of runtime for ROI, excluding electrical and power supply costs.

It doesn't make any sense at all to buy Bitmain products, presently - A ROI will be difficult and uncertain.

+1. the prices are a bit high, yet understandable.
1) theres minimal competition
2) theres a strong market within china (where the shipping cost is <40% of sending overseas)
3) The units could be profitable for those with <7c/kwh power (especially if located in china and saving a large chunk of the shipping cost)

to be entirely honest, its all a gamble. If BTCUSD rises, mining returns will increase and hashrate will follow. However, theres a good chance that if BTC were to rise 4x in price in the next 12 months, difficulty would likely struggle to keep up since theres limited new production at the moment.

Also still their best chips.  They have not launched anything as far as efficiency beyond this.  So it's still the top of the line as far as bitmain on efficiency.

[Xian01]

Have Bitmain any plans on lowering S5 (and maybe shipping?) price? 

Shipping is ~cost, its unlikely to change any time soon unless UPS / DHL lower their prices.

... or, Godforbid, Bitmain lowers their prices.