Topic: ANTMINER S3+ Discussion and Support Thread - page 330. (Read 710164 times)

Sorry i meant 3 x S3s...

Not overclocked? That seems wrong. These units pull ~366w stock frequency.

Yes, i am running 2 x S3 on a 1200i.  Pulls 1040 from the wall.  No problem.

I lose hash at 32 minutes on the dot. Different for each miner really.

Did not know this was a thing. Yes. Much easier.

there is the first four S3's first screens i took ..
what i think the problem is the stock thermal paste ..
two of the S1's in the above pic are under performing ..
those two were unable to be overclocked ..
both of those have same symptom thermal grease leaking ..
i think the under performance is the stock thermal paste touching the pins ..
maybe the stock thermal paste is capacitive ..
which is same reason i think no one sees improvements using AS5 ..
i will be opening those two S1's and swap the paste and test ..

Did you guys prefer DHL or UPS when it came to ordering from bitmaintech?

I have played with overclocking, as have others and here are my numbers. The difference here is that I have also measured the current with an induction current probe. My current numbers are not that accurate but should be close enough. I get different values depending on whether I measure the positive or negative wires and which direction the probe is oriented.
As an electrical engineer, my conclusion is that one PCIe cable per blade should be sufficient, but the caveat to that statement is that I don't know anything about the design of the CCA and the interaction of the 2 plugs. I assume they both plug into the same power and ground planes on the board in which case just using 1 plug should be fine; although I hate to go against mfr's recommendations as they should know their product (although that may have had more to do with earlier versions which may have had problems that have since been fixed). I also doubt that 2.5 additional Amps from overclocking will hurt anything. The only other thing to say is that early on in this thread, people reported performance improvements depending on which plug they used. I don't know what to make of that.

218.75Mhz, 14.2A, 440Gh
225            14.6A, 446Gh
237.5         15.7A, 475Gh
250            16.7A, (My miner didn't like it, but I estimate 500Gh+)

(All amp numbers +/- 0.5A)

With 3 18Awg wire sets in a harness, 16.7A should be within spec but I also do not know the quality of the wires and cannot speculate about the quality of wires in your average power supply unit. This also assumes that all 3 wire sets have a good connections. There's also a caveat that I don't know if the weak point might be the connector or the traces on the CCA.

My conclusion is that to run 2 S3's at stock frequency, you'd want to make sure your power supply can deliver at least 700W to the 12V rail, and 800W if overclocking to 250Mhz.

My Antec Bronze-rated 850W supply consumes 730W running 2 S3's at stock (218.75) speed.

I hope this helps some people.

the first four in that list are longer than 24hrs ..
i might be overclock testing the S3's soon so we will see ..
i modded these S3's before i even connected them to a psu ..
so i do not know what they would have hashed at before replacing the paste ..
they are all still holding strong hash rates so far ..

no they do not.  how do you want to pay for one with paypal or  a cc?


there are good resellers that will   sell you one with a cc


this guy sold quite a few with a cc


https://bitcointalksearch.org/topic/antminer-s3-group-buy-credit-cards-accepted-now-batch-5-682528

there is no proof that re-pasting affected any of this, and I assume that this is just after a few hours. Some units have a habit of starting bright (at >470), then spontaneously dipping back to 440GH or even lower.  It is also possible that OP had great units to begin with.

is 12,00 * * * * /etc/init.d/cgminer restart
the command for restarting every 12 hours, then?

could someone comment if this is OK to put this in tasks instead of ssh-ing?

Thanks, 9600

Is anybody running three S3's from a Corsair AX1200i without problems (not overclocked) ?

Just wondering if this will be OK, I have the offer of a cheap one from a friend.

Does Bitmain have an official ebay account? I can't get ahold of bitcoin atm to order :X

What would be the code for every 6 hours, 12 hours or 24 hours?

he already has a couple watchers too!

Look into over-clocking. You are basically allowing yourself access to the code.

Cool! I have some coming. Did you use pads or paste on those little black chips?

Check out this idiot...

http://www.ebay.com/itm/Antminer-S3-478GH-s-ASIC-Bitcoin-Jumper-Switch/201139603073?_trksid=p2050601.c100272.m3467&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140717092400%26meid%3D8757509340172045637%26pid%3D100272%26prg%3D20140717092400%26rk%3D3%26rkt%3D4%26sd%3D121395643828%26clkid%3D8757510278228866401&_qi=RTM1562571