BITMAIN Antminer S3 support and OverClocking thread

[kabopar]

For the record, cleaning seems to have fixed my unit. It overclocks to 237.5 Mhz comfortably now whereas it would not OC previously and many times would fail to run at all.

I am still curious how they managed to get paste in the holes where the screws go.

Probably because there is thermal paste also on the bottom of the boards, between the 'main' heatsinks (same as on the S1) and the boards.  If there is too much thermal paste there, as the screws get tightened it squeezes through the holes to the component side of the boards.
('too much of a good thing'.....

Cheers

[oskuro]

Whats the frequency that if you OC you need to connect 4 PCIE?? I mean, more than 218,75? 225?

And if you dont OC, its recommended to have only 2 PCIE connected?? Or if you have 4 it doesnt matter?

[Atomar]

One of my batch 1 units will not overclock. In fact, sometimes it won't start up at all.

I have it taken apart right now. I am running to the store to get some alcohol for cleaning (well, maybe some other kind to drink as well...).

Several of the chips have this problem.

I know that some people say that thermal paste does not conduct electricity. However, the thermal paste that is used by BitMain has some oil in it which I do believe conducts some electricity (as learned from my S1 experiences). I am hoping a cleanup job will fix this S3.

What about using Thermal-PAD's instead of Thermal-paste ??

Check this PDF catalog: http://www.heatmanagement.com/local/media/pdfs/Kunze_ProductCatalogue-2014.pdf
I was looking the pad on page 80 !!  220w/mk !

There are even bether ones on page 94 mage with carbon !

What y'all think about ?

[J4bberwock]

What about using Thermal-PAD's instead of Thermal-paste ??

Check this PDF catalog: http://www.heatmanagement.com/local/media/pdfs/Kunze_ProductCatalogue-2014.pdf
I was looking the pad on page 80 !!  220w/mk !

There are even bether ones on page 94 mage with carbon !

What y'all think about ?

The one on page 80 is rated at 3w/mK
Some phobya pads are rated 7w/mK
And phobya nano grease extreme is 16w/mk.
When looking at heat pastes tests, you will also notice that at a point, it will not be cost efficient at all. Almost no gain with price doubled or tripled.
Good pastes in a 7-12w/mk range will be more than enough for our use in asics.

As a side note, not many materials will give you 200w/mK or over when mixed to form a paste/pad.
Maybe diamond that is 1000w/mK, but t the paste would cost way too much
Anyway, if it ever exists, anything over 200 will be useless since aluminium (heatsink material) is around 220w/wK.

[Atomar]

You're right! Sorry. I was looking at the paper catalog.

On the PDF, the 220W/mk one, is on page 78!

I just think, the PAD would be easyer then the paste to apply.

[J4bberwock]

You're right! Sorry. I was looking at the paper catalog.

On the PDF, the 220W/mk one, is on page 78!

I just think, the PAD would be easyer then the paste to apply.

OK, I checked, they are aluminium foil with extremely thin layer of heat compound on both sides, that could explain the high w/mk value.
If you can have them for free or almost, why not.
I'm curious to see if it really improves the cooling of the chip.

[kaltar]

well no matter what i try, even putting the s3 in front of an AC, the hash rate drops to about 400 after a few hours, not matter the cooling, the cleaning and re paste, heat sinks on the dc-dc and freq i use.
i need to restart it, usually restarting cgminer gives me back my top hash about about 30mins, than it drops slowly,
anyone know how i can kill and restart cgminer every X amount of minutes. ?

[WheresWaldo]

...

" 200                  12.60                    0782           21.3                    19
  225                  14.18                    0882           18.9                    17
  250                  15.75                    0982           17.0                    15
  275                  17.33                    0a82           15.5                    14 "

the pattern for 25MHz steps is obvious...in RED ...

Still I did not get how the S1/S2 table values are applicable / usable instead of S3 values... Anybody checking them ...

225MHz - "1185" instead of "0882"...
250MHz - "1386" instead of "0982"...

ZiG

i wonder if anyone has dared to try 275mhz yet

well no matter what i try, even putting the s3 in front of an AC, the hash rate drops to about 400 after a few hours, not matter the cooling, the cleaning and re paste, heat sinks on the dc-dc and freq i use.
i need to restart it, usually restarting cgminer gives me back my top hash about about 30mins, than it drops slowly,
anyone know how i can kill and restart cgminer every X amount of minutes. ?

what is the power supply your using for the antminer?

[deadreply]

Hi everybody

I have 2 antminer s3 that wont start when i power on the poser supply led on antminer flash red and fan stop spinning...

any suggestion ?

i have 4 other on the same batch that work perfectly.

[allcoinminer]

Hi everybody

I have 2 antminer s3 that wont start when i power on the poser supply led on antminer flash red and fan stop spinning...

any suggestion ?

i have 4 other on the same batch that work perfectly.

Check the ips and gateways ips are matching the A place below
xxx.xxx.A.xx

[deadreply]

Hi everybody

I have 2 antminer s3 that wont start when i power on the poser supply led on antminer flash red and fan stop spinning...

any suggestion ?

i have 4 other on the same batch that work perfectly.

Check the ips and gateways ips are matching the A place below
xxx.xxx.A.xx

Problem resolved
thanks

[oskuro]

Finally with 225 for both 901 GH/s stable. 730W

so not bad.

lets see with batch 4 units

[kaltar]

well no matter what i try, even putting the s3 in front of an AC, the hash rate drops to about 400 after a few hours, not matter the cooling, the cleaning and re paste, heat sinks on the dc-dc and freq i use.
i need to restart it, usually restarting cgminer gives me back my top hash about about 30mins, than it drops slowly,
anyone know how i can kill and restart cgminer every X amount of minutes. ?

what is the power supply your using for the antminer?
[/quote]

80 plat rated 1000w coolmaster

[redled]

Beeper-problem solved.

Just desoldered the speakers 

[allcoinminer]

Beeper-problem solved.

Just desoldered the speakers  

Hope you missed the firmware upgrade to solve the beep issue.
Your warranty void now!
https://bitmaintech.com/support.htm?pid=007201407180243004432lBQW28O0633

[J4bberwock]

well no matter what i try, even putting the s3 in front of an AC, the hash rate drops to about 400 after a few hours, not matter the cooling, the cleaning and re paste, heat sinks on the dc-dc and freq i use.
i need to restart it, usually restarting cgminer gives me back my top hash about about 30mins, than it drops slowly,
anyone know how i can kill and restart cgminer every X amount of minutes. ?

what is the power supply your using for the antminer?

80 plat rated 1000w coolmaster
[/quote]

Can you check voltage going to the chips at startup and when the hashrate has dropped?

[fivejonnyfive]

Sooooo if my B1 S3 runs for an hour without getting any x's on the chip status at 250mhz

With a 502gh Poolside hashrate, drawing 425 watts at the wall from a bronze psu - did I just like hit the lottery of units or something? Or do I need to keep an eye on this thing before I declare it stable.

Also does OCing really void the warranty? does it like set a flag bit somewhere?

[seftonde]

I got my two ant miner S3's yesterday.  Batch 3.  They run ok, a little sporadically from high 300's to 450 Ghs.  Both stock clocks.

How do I tell what version of the firmware I have?  I've looked everywhere in the antminer control panel; must be missing something, but the current version on Bitmain's site is antMiner_S320140721.bin.  Is there an easy way to see if I already have that or should upgrade.  (I would like to get rid of the sporadic beeps every ten minutes or so!)

Thanks!

[fivejonnyfive]

I got my two ant miner S3's yesterday.  Batch 3.  They run ok, a little sporadically from high 300's to 450 Ghs.  Both stock clocks.

How do I tell what version of the firmware I have?  I've looked everywhere in the antminer control panel; must be missing something, but the current version on Bitmain's site is antMiner_S320140721.bin.  Is there an easy way to see if I already have that or should upgrade.  (I would like to get rid of the sporadic beeps every ten minutes or so!)

Thanks!

I'm not sure how to tell what firmware you have, but I'd go ahead with the upgrade anyway. I upgraded to the 721 firmware and I haven't heard a beep from the thing since.

[seftonde]

thanks fivejonny - I did the same thing; flashed the firmware anyway on both units - no beeps yet!!

thx!