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do you think this PSU can deliver 2600 when volt is 200V ?
our voltage lower to 200V when we have Peak time
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is there a hardware different between 12.95 and 11.85 batches ?
or it just down clocked
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the board doesn't look fried to me, otherwise it would have shown X on chips right ?
it just doesn't appear at all.
maybe I could make it work again without having to deal with bitmain's shitty warranty ?
here is what i did when this happen to me i powered off one of working hashboard and used data cable and 3 pci-e cables used on it to the hidden board the create reset to the miner when it still not showing i opened a ticket and they tell me to send it to them |
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APW5 in the top of the page they write 5KG
and in the Parameters tables 2.5KG
what is the correct weight?
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Weight: 9 kg  9 KG + 5 KG PSU = 14 KG |
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they told me to send it to there address and i sent it from 2 days
i will update here what happen to me
it cost me 65$ for shipping using Aramex
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this power supply can power 2*S9 in 220V ?
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the board still have red light and fauiler lamp not light
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my S9 B9 lost one board today  here is picture from yesterday after more than 2 days of work  i opened a ticket but i read your experiences and i know what will happen |
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Same happen to me yesterday. Batch 1 S9
is there a fix to this issue ? its batch 9 |
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here is a picture toked yesterday after more than 2 days of working  |
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it still have red flash like the other
and the failure lamp not flashed!
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hi, it suddenly disappear from the page ( my miner down rated to 568 from the first day ) what should i do ?  |
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Is it possible to modify the clock frequency of the S9? (I'd be interested in underclocking it)
yes you can. I have 3 units S7, after halving day, my earning is drop and now i still using S7, for result is drop but help because the price is increase, but need to long time for RoI, I want to know, as my experience we need about 7 months to get roi, could you calculate how long can take profit if i using S9?
I can plug in three or four sets of numbers to this calculator https://bitcoinwisdom.com/bitcoin/calculatorand give you an idea. If you mine at kano.is price of coin stays the same. Difficulty averages 2% your power is 0.08 cents in 407 days you will be even in 530 days you will be ahead price of coin stays the same difficulty averages 3% your power is 0.08 cents you will not break even So a simple question is you power 8 cents? If it is maybe you make money. You say you have s-7's so this means you have power supplies. Buying the s-9 is a tough cal if your power cost is 8 or more cents a k-watt in USA money. kano profit more than antpool ? |
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so if I/O consume 100W at least that mean each board need about 380W |
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The biggest power draw from the controller power feed is from it powering the fans. Power specs for the BB can be looked up from anyplace that sells them but should only be 5-10watts. The fans however... Again, look up the specs for the actual models used but I believe each one at full speed draws something like 20-25W.
Don't care what Bitmain says on power draw for the whole miner. My Cyberpower UPS's say an unmodified s7 takes between 1,225 to 1,311w depending on batch. The batch-3 s9 reads as 1,330w. Both using the Bitmain PSU.
5700 rpm consume more than 50W in usually S9 need less power than S7 and each 50H lowered from freq can decrease power by 100W |
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S9 11.85 consume 1172W for all 3 hash boards and I/O
so i think I/O controller consume at minimum 150W
that mean each board consume about 360W in maximum not 460W
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hi,
how much power consumed by each hash board on S7 & S9
and I/O too
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