BITMAIN Antminer S3 support and OverClocking thread

[J4bberwock]

Depends where you live .... if in eu having 240volt you could go for server psu's delivering 2100 watts
I am currently trying to find a solution for the dell 2100 psu's if its possible to get a breakout box for them

Not sure a breakout board is available for it, but you can still wire it as you wish. Here is the trick to start it, if you don't already have it.
http://www.rcgroups.com/forums/showpost.php?p=20789737&postcount=1224
www.rcgroups.com/forums/attachmentNew.php?attachmentid=4644398

I don't have one at hand to design the board, I'll probably design one for the HP DL 580 g3 1300w PSU that I use for almost everything that needs 12v, they are great and I sourced some for less than 40€ where the Dell 2100 are over 100€. The only downside is that the plug to connect the boare to the psu is hard to find in small quantities and cheap.

For those not familiar with server PSU, please note that they are using specific power cable. It's often a C20 plug, if I'm not mistaken.

[oskuro]

Which one of these PSU(800 to 850 W) will you buy? As im not going to OC because im fine with default GH/s and temperature and Power consume, with 800 or 850 W better, i can power up 2 S3.

So here are the possible ones:

http://www.pccomponentes.com/fuentes_alimentacion/800w/850w/

Just has to be less than 100 Eur. i know there are very good PSU and they cost more than 100 Eur but i dont want to spend that much if they just work fine.

thanks!

[kaltar]

Well before i had one of my S3's only doing 400gh no matter what freq i tried, but today i flashed the new firmware and put it back at default freq (218.75) and bang!!!
447GH, i don't know if it's a fluke but i'm not touching it untill i have to.

Good Luck everyone.

[J4bberwock]

Which one of these PSU(800 to 850 W) will you buy? As im not going to OC because im fine with default GH/s and temperature and Power consume, with 800 or 850 W better, i can power up 2 S3.

So here are the possible ones:

http://www.pccomponentes.com/fuentes_alimentacion/800w/850w/

Just has to be less than 100 Eur. i know there are very good PSU and they cost more than 100 Eur but i dont want to spend that much if they just work fine.

thanks!

Corsair, seasonic, antec are good brands.
Go for at least 850w for 2 S3, always keep at least 10-15% margin for a PSU that will run 24h a day 365 day a year.
If you want cheaper one and if you can do the mod, buy a server PSU and mod it, rcgroup website is a great source on how to mod server PSU.

[HerbPean]

Which one of these PSU(800 to 850 W) will you buy? As im not going to OC because im fine with default GH/s and temperature and Power consume, with 800 or 850 W better, i can power up 2 S3.

So here are the possible ones:

http://www.pccomponentes.com/fuentes_alimentacion/800w/850w/

Just has to be less than 100 Eur. i know there are very good PSU and they cost more than 100 Eur but i dont want to spend that much if they just work fine.

thanks!

I use a Corsair RM1000 pulling 750 Watt from it (one OC and one Stuck) a bit overkill, but it's running at about 75% capacity which is save and easy for him.

[oskuro]

Which one of these PSU(800 to 850 W) will you buy? As im not going to OC because im fine with default GH/s and temperature and Power consume, with 800 or 850 W better, i can power up 2 S3.

So here are the possible ones:

http://www.pccomponentes.com/fuentes_alimentacion/800w/850w/

Just has to be less than 100 Eur. i know there are very good PSU and they cost more than 100 Eur but i dont want to spend that much if they just work fine.

thanks!

I use a Corsair RM1000 pulling 750 Watt from it (one OC and one Stuck) a bit overkill, but it's running at about 75% capacity which is save and easy for him.

ok guys hehe. i will have to consider then spending a little more just to run them safe

[finlof]

Depends where you live .... if in eu having 240volt you could go for server psu's delivering 2100 watts
I am currently trying to find a solution for the dell 2100 psu's if its possible to get a breakout box for them

Not sure a breakout board is available for it, but you can still wire it as you wish. Here is the trick to start it, if you don't already have it.
http://www.rcgroups.com/forums/showpost.php?p=20789737&postcount=1224
www.rcgroups.com/forums/attachmentNew.php?attachmentid=4644398

I don't have one at hand to design the board, I'll probably design one for the HP DL 580 g3 1300w PSU that I use for almost everything that needs 12v, they are great and I sourced some for less than 40€ where the Dell 2100 are over 100€. The only downside is that the plug to connect the boare to the psu is hard to find in small quantities and cheap.

For those not familiar with server PSU, please note that they are using specific power cable. It's often a C20 plug, if I'm not mistaken.

These breakout boards for the cheap IBM 2000 watt PS will be available soon - http://www.gekkoscience.com/products/IBM2K_board.html.  this site will prob offer both PS and breakout board in a combo deal, but currently only has the PS available (for cheap too!) - http://minersource.net/products/delta-dps2000w-server-power-supply.  you can get his current product which uses a Dell 750 watt server power supply http://minersource.net/products/dell-750w-psu-slash-adapter.  I've used this specific product and have been very pleased.

[Airwhale]

I just wanted to second how awesome gekkosicence's breakout boards are.

Probably a really dumb question here but................

Say a person just ordered 30 S3's and wanted to find a more economical (not in terms of price but in terms of setup )solution to powering them all instead of buy a ton of standard PSU's.

Does anyone know of a solution involving a larger power supply unit that could say, power 5 units off it instead of having to have a dozen standard ATX psu's?

Looking for something as close to plug and play as possible.... Thanks for not beating me up over a dumb question.

[HerbPean]

Which one of these PSU(800 to 850 W) will you buy? As im not going to OC because im fine with default GH/s and temperature and Power consume, with 800 or 850 W better, i can power up 2 S3.

So here are the possible ones:

http://www.pccomponentes.com/fuentes_alimentacion/800w/850w/

Just has to be less than 100 Eur. i know there are very good PSU and they cost more than 100 Eur but i dont want to spend that much if they just work fine.

thanks!

I use a Corsair RM1000 pulling 750 Watt from it (one OC and one Stuck) a bit overkill, but it's running at about 75% capacity which is save and easy for him.

ok guys hehe. i will have to consider then spending a little more just to run them safe

Thy are cheaper solution like the dell power supply but consider that they are really loud. So for home it might be a bad idea ;-) (like girlfriend going mad)

[Rabinovitch]

Which one of these PSU(800 to 850 W) will you buy?

If I were you I would like to buy this one:
http://www.pccomponentes.com/corsair_ax860_860w_80_plus_platinum.html
Second in line would be this:
http://www.pccomponentes.com/corsair_rm850_850w_80_plus_gold_modular.html

Server PSU is definetely OK, but if something will go wrong or if you get bored of mining seems that it will be easier to sell out a PC PSU rather than server PSU...

[dlasher]

Probably a really dumb question here but................

Say a person just ordered 30 S3's and wanted to find a more economical (not in terms of price but in terms of setup )solution to powering them all instead of buy a ton of standard PSU's.

Does anyone know of a solution involving a larger power supply unit that could say, power 5 units off it instead of having to have a dozen standard ATX psu's?

If you're looking for something easy, most of the >1300W power supplies will power a minimum of (3) S3's.. That would mean 10 PSU's for 30 machines.. easier to manage.

If you're looking for something cheaper, you can buy 100-200A 12V supplies in varies forms (server PSU, LED power supply, etc) and cable your own solution.

[jonnybravo0311]

So it's been 12 hours give or take since I flashed the new firmware and changed the cgminer settings to queue 0 expiry 1 scan-time 1.  No real noticeable difference.

First S3 (hashes ~440):


Second S3 (hashes ~425):

[kkurtmann]

So it's been 12 hours give or take since I flashed the new firmware and changed the cgminer settings to queue 0 expiry 1 scan-time 1.  No real noticeable difference.

I thought the new firmware only reduced the beeps further

[kkurtmann]

Probably a really dumb question here but................

Say a person just ordered 30 S3's and wanted to find a more economical (not in terms of price but in terms of setup )solution to powering them all instead of buy a ton of standard PSU's.

Does anyone know of a solution involving a larger power supply unit that could say, power 5 units off it instead of having to have a dozen standard ATX psu's?

If you're looking for something easy, most of the >1300W power supplies will power a minimum of (3) S3's.. That would mean 10 PSU's for 30 machines.. easier to manage.

If you're looking for something cheaper, you can buy 100-200A 12V supplies in varies forms (server PSU, LED power supply, etc) and cable your own solution.

I power 4 S3's no prob with this --> http://www.newegg.ca/Product/Product.aspx?Item=N82E16817159158

16 pci-e 6+2 connectors

[oskuro]

then with what frequency u can OC if you are lucky to 500 GH/S?? 237.5 or 250? I see some people get to 500 GH/s using 250 and others using 237,5 , why is that?

[Beastlymac]

then with what frequency u can OC if you are lucky to 500 GH/S?? 237.5 or 250? I see some people get to 500 GH/s using 250 and others using 237,5 , why is that?

250 if you want 500+GH/s
Depends on the luck of the dc part you get in your miner.

[allcoinminer]

then with what frequency u can OC if you are lucky to 500 GH/S?? 237.5 or 250? I see some people get to 500 GH/s using 250 and others using 237,5 , why is that?

Overclocking to 250M will make the S3 hash at 504Gh/s as per datasheet.
237.5M will hash slightly lower that that. At 225M the miner will hash at 478Gh/s.
At stock frequency 218.75 will make it hash at 441. At stock its somewhat stable at 441.
But for other higher frequencies will fluctuate for most in a wide range.

[oskuro]

then with what frequency u can OC if you are lucky to 500 GH/S?? 237.5 or 250? I see some people get to 500 GH/s using 250 and others using 237,5 , why is that?

Overclocking to 250M will make the S3 hash at 504Gh/s as per datasheet.
237.5M will hash slightly lower that that. At 225M the miner will hash at 478Gh/s.
At stock frequency 218.75 will make it hash at 441. At stock its somewhat stable at 441.
But for other higher frequencies will fluctuate for most in a wide range.

ok thanks, im testing with different frequencies. one of my 2 S3 cant run at 250 frequency, gets xx and - since second 1

[oskuro]

After few frequency tests, this is what i get:

1st S3, which is the one that gets lower hashrate, using 237,5 frequency(cant run at 250 frequency, i get a lot of xx and - since second 1):



2nd S3, higher hashrate, using 250 frequency:



Do you think its worth it to run them OC considering what i was getting at default 218.75 frequency??

Here are previous stats:

Before OC:

1st S3  --> 218.75 --> 345 W --> 412,72 GH/s  41/43 TEMP. WORKING GOOD. NO ERRORS
2nd S3 --> 218.75 --> 369 W --> 434,55 GH/s  42/43 TEMP. WORKING GOOD. NO ERRORS

After OC:

1st S3 --> 237,5 --> 399 W   --> 455 GH/s 45/45 TEMP. WORKING GOOD. NO ERRORS
2nd S3 --> 250 --> 415 W --> 475 GH/s 47/45 TEMP. WORKING GOOD NO ERRORS

[allcoinminer]

Overclocking profitability depends on your electricity rate per KWH.
If the miner is more profitable to run at OC than at the default clock speed after deducting electricity charges, go ahead.
When the margin or profitability comes to near zero revert it back to lower clock frequencies from OC to UC.
The strategy is to find the sweet spot of profitability throughout the period.
The flip side of Overclocking is the risk in ruining your miner. The S1 was rock solid even at OC and its tried and tested.
But the case of S3 is different, its not even mining stable at 441, but in a range below and above for many.
I advice to run at stock speed for some time before OCing.