Dont do it! Its really not worth sending them back. 420 gh/s is actually within the 441 +/- 5% range bitmain has advertised. That extra ~20 gh/s is only about 30 cents a day. You will lose more having the miners not hashing than from the lower hashrate. At the very least wait for a few difficulty increases before sending them back.
too late, just gave the package to the UPS guy  |
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S3 not hashing correctly?
I've got 4 units and only 1 hashes at 440-441 at stock freq, the others get 414-420ish.
In working with bitmain over email I tried re applying thermal paste and swapping psu's around and still nada. Then they asked me to swap control board from the one good miner to one that is underperforming and lo and behold the underperforming one is now hashing at 440-441 with the other hashing at the lower speed.
I've swapped it on then others and it's the same result. Since the static IP is saved on the control board it moves from swap to swap with the good control board, so it constantly thinks it's the good unit and hashes at adv. spec
so after further testing with bitmain engineer he had me test each blade individually, and individually after 15min they were hashing around 217-220.. maybe 15min was not long enough to test but after sending him the screenshots of them individually he went ahead and sent me RMA label for the 3 control boards. just sucks having to be down 3 miners while they ship to china and wait for the replacements to ship back to me Does bitmain not let you send a deposit, they send you new parts, you send old parts back, then they send deposit back? no they dont unfortunately  |
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S3 not hashing correctly?
I've got 4 units and only 1 hashes at 440-441 at stock freq, the others get 414-420ish.
In working with bitmain over email I tried re applying thermal paste and swapping psu's around and still nada. Then they asked me to swap control board from the one good miner to one that is underperforming and lo and behold the underperforming one is now hashing at 440-441 with the other hashing at the lower speed.
I've swapped it on then others and it's the same result. Since the static IP is saved on the control board it moves from swap to swap with the good control board, so it constantly thinks it's the good unit and hashes at adv. spec
so after further testing with bitmain engineer he had me test each blade individually, and individually after 15min they were hashing around 217-220.. maybe 15min was not long enough to test but after sending him the screenshots of them individually he went ahead and sent me RMA label for the 3 control boards. just sucks having to be down 3 miners while they ship to china and wait for the replacements to ship back to me |
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How about this. I throw in a S1 no power supply and it has not been over clocked and 1 additional Avalon module. So this gives you 1 4 module Avalon, you will need to up the power supply to 1000 watts and 1 S1. Gives you a total of 280gh of power. I live in So Cal so the shipping cost will be very cheap.
ehh, not interested in the avalon.. looks like a huge beast |
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Hi, So i know you are serious can you take a photo of your mining operation and put "maxbit" next to it ? i will send as soon as i get the photo. thanks, however i do have a lot of questions to ask about mining after that if that's ok I normally wouldn't think this odd, but what if this guy is fishing for legit photos with this maxbit name on it? |
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I initially replaced the thermal paste with Arctic Silver 5, but after learning of its capacitive properties I replaced it with this: http://www.amazon.com/Cooler-Master-IceFusion-Performance-RG-ICF-CWR2-GP/dp/B003AVMRQGthe thermal conductivity on the Cooler Master IceFusion is only 1.0 (W/m-K) the specs say: High Thermal Conductivity Low Thermal Resistance Non-Corrosive Best Thermal Stability in High Temperature also does anyone know if its capacitive? theres one review on amazon saying its electrically conductive.. it comes with a spreader stick so i spread a thin layer on each asic, but a couple times a little dribble sorta landed around the chip.. it was late so i didnt bother to clean it |
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done I am in with 950gh
I've got my 2 s1's there , and load balancing one s3 with pool#3 on bitsolo I noticed the guy who found the last 2 blocks is gone now If I made 50 BTC in the span of a week, I highly doubt I would still be mining. well he was on there all last week as #2 biggest at 15TH along with the 150TH guy |
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done I am in with 950gh
I've got my 2 s1's there , and load balancing one s3 with pool#3 on bitsolo I noticed the guy who found the last 2 blocks is gone now |
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Since mine has the same probs as yours, what solution did Bitmain offer to you to rectify the faulty control board.
Nothing yet , waiting to hear back |
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S3 not hashing correctly?
I've got 4 units and only 1 hashes at 440-441 at stock freq, the others get 414-420ish.
In working with bitmain over email I tried re applying thermal paste and swapping psu's around and still nada. Then they asked me to swap control board from the one good miner to one that is underperforming and lo and behold the underperforming one is now hashing at 440-441 with the other hashing at the lower speed.
I've swapped it on then others and it's the same result. Since the static IP is saved on the control board it moves from swap to swap with the good control board, so it constantly thinks it's the good unit and hashes at adv. spec
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Trade you a Avalon asic first generation. Getting around 80ghs. Including 750 watt power supply for your 3 750 TI gpus
the 3 gpu's are worth roughly .5btc right now, i doubt that old avalon is worth that |
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Istanbul, not Constantinople? (sorry i had to  ) |
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interesting, jumper switch? only 1.50 not bad
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trade for 3 750 Ti GPU's?  Which brand/model? 2x PNY and 1x eVGA. All 3 are the half size cards that require no pcie power, just draw power from mobo Also I'm in OR |
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Somebody's got some pretty serious firepower pointed there, that's for sure. One address has 160TH/s... the lucky guy who found the pool's only 2 blocks is there with 15TH/s. That "high roller" would expect to find a block about every 6 days with that hash rate at current difficulty. $17,000 a week payday. Not too shabby. yeah but 160TH on a regular pool would net a little over 4btc a day, so about $2,500 daily..which is about the same as finding a block every 6 days I bet hes banking on finding some quick back to back blocks? |
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trade for 3 750 Ti GPU's? |
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so I've got 2 S1's right now on a 660w seasonic plat PSU
one is OC'd to 200GH and other is pencil modded to 275freq hashing at 140gh
since I have free electricity with these I want to squeeze as much hash as I can on this PSU, cooling is not an issue (in a server room)
is the current setup the best bet to get the most hash out of 660w? I initially had them both at 300freq pulling about 410watts for a total of 310gh but i took off the pencil on one since my electricity is free and it gave me an extra 30gh
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