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Author Topic: CM1 Quad Spartan-6 FPGAs reserve 3 BTC  (Read 4220 times)
SebastianJu
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April 05, 2013, 03:51:32 PM
 #41

I bought all 6 boards, other bidder resigned.

I fixed boards by flashing them with HashVoodoo bitstream.
My results so far:
4 boards running 827, 835, 840, 840 MH/s (that's because bfgminer limit 210 MHz per chip, I will increase it later with cgminer)
1 board running 622 MH/s - 202MHz, 210 MHz, 210 MHz, OFF (one FPGA chip is dead)
1 board running 620 MH/s - 200MHz, 210 MHz, 210 MHz, OFF (one FPGA chip is dead)

Entropy-uc estimated it as:
Quote
Two of the boards kick out 50% hardware errors, resulting in an effective hashrate of ~400 MH/s
3 boards have one pair operating below standard for hash rates ~600 MH/s
1 board was programmed with 170 MH/s bitstreams, so it is running at ~680 MH/s
That's 400+400+600+600+600+680 = ~3280
I already have ~4564 (no less than that).

I am very happy with the results. Thank you again Entropy-uc! Smiley

Sounds good. I hope you get your investment back. It could be hard.

Please ALWAYS contact me through bitcointalk pm before sending someone coins.
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