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I have some Blackarrow Bitfury boards. Wanting to sell around 25 of them. They do around 40Gh each at 1W-1.1W per GH.
Located near Charlotte NC. looking to get $5 per card. PM if interested.
Also I will include the controller, cables, and standoffs to run these. These boards have all good chips, no dead ones!
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Received one monarch. Running perfectly. @Crazyates, I might get the other monarch from you in a few days.
Thanks!
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Bought a Peppermining board from him a while back. He sent me a new Corsair water cooling kit. No problems, board is hashing away right now.
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Bought a Monarch from him.
Date: 5/13/2015 16:00
To: Monarch purchase form "Crazyates" 19AZL2fT9ur97SYYjPamKDJ9uNGhg8G2cL
Debit: -0.70 BTC
Net amount: -0.70 BTC
Transaction ID: 0701fae1a3e3c3ff863f5fa7696a93a5e16028920e48564b32708237e145d337-000
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A miner that is also an air conditioner. One that puts out cold air.  IS this possible? |
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My understanding is that the S2 is fairly close to the maximum efficiency of the BM1380 ASIC. Most likely there is not much more to be gained by underclocking.
1 watt per GH is about the best this chip can do. Maybe .9 watt with some intensive tweaking of the voltages. Would be very tedious for and S2.
The voltage's can't be altered however. THere is no option in the settings. You have to "manually" tweak via pencil modding. You add resistance to a feedback circuit in the regulator, hence lowering the voltage. Would have to do this 40 times in the case of a S2. With the S1, only 8 times. This is why it would be tedious.  |
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I have read through almost all of his posts. It is my understanding that the firmware is "read locked" so it cannot be pulled from a working unit.
Maybe someone will post the studio project on Github so I can "tweak" it like I did my singles. I would just like to have access to the voltages between
630mv and 690mv.
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BFL is known for their helping with bitcoin community,..... ok i could not even make it any further without laughing.
I highly doubt BFL does anything to help the community. I expect them to be dodging lawsuits for years to come.
Sadly, this I know. Still I would like to see what these cards can do with just the right voltage/frequency combo. |
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I would love to tweak the firmware for these cards. Most of mine have 1.4.2. One has 1.4.3. First thing to do is remove that pesky voltage cap of 630mv! Seems these things prefer the voltage just a bit higher, maybe 650mv. I fear that with all that is going on with that company we may never see it released. Unless someone can pull it off of one. |
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My understanding is that the S2 is fairly close to the maximum efficiency of the BM1380 ASIC. Most likely there is not much more to be gained by underclocking.
1 watt per GH is about the best this chip can do. Maybe .9 watt with some intensive tweaking of the voltages. Would be very tedious for and S2.
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PM sent. Do you still have the monarchs?
edit: Still no response in regard to the monarchs. Are these still for sale?
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OP, could you post some pictures of the power supplies? Maybe a picture or two of the monarchs. Interested in a couple of the power supplies if thy are
in good condition.
Thanks!
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What brand are the 750W PSU's? Corsair A series?
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Received my Monarchs today. All working perfectly.  Great transaction as usual. |
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Installed the new binary on one of my underclocked ants and now the discard rate is much higher. Averages around 6% now. With the previous binary (4.3.2)
it was around .2%. Is this normal?
Exact setting I am using: [196.88 69 5f06] with latest firmware.
Thanks!
Discards do not matter. Did you mean Rejects? If so post the full set of relevant numbers: Elasped, DiffA, DiffR Rejects are actually very low. Just curious about the discards. |
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A = C-scape Hexfury
B = Drillbit Avthumb Avalon based
C = Block erupter 336Mh
D = Edison USB Thumb
E = Nanofury II
F = Nanofury 6
G = Antminer U1
H = Twinfury
I = C-scape BiFury
J = Blue Fury
K = Twin chip fury
L = Dualminer USB
M = Avalon Nano
N = Antminer U2
O = Nanofury prototype V1 or V2
P = iMiner
Q = U disk Wright
R = Drillbit Thumb Bitfury based
S = Cryptorig Hitchhiker
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