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how to overclock fpga or asics
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Topic: how to overclock fpga or asics (Read 2178 times)
61197da925c1
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how to overclock fpga or asics
November 19, 2012, 03:47:39 PM
#1
has this been done before?
60 GH/s BFL Single SC - Pre-Order Yours Today!
`````` Only $1299.99 - *Link Removed* ``````
Photon939
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Re: how to overclock fpga or asics
November 19, 2012, 05:04:52 PM
#2
All current FPGA implementations are already running very close to their max operating speed, bitcoin mining involves toggle rates that significantly exceed typical FPGA implementations which creates a lot of heat. BFL singles are known to be unstable and throttle back on speed if the cooling system isn't 100% flat on the chips.
ASIC is another matter but seeing as how no offerings are currently available to consumers, any information regarding maximum frequency and clocking headroom is unknown.
hanz
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Re: how to overclock fpga or asics
November 19, 2012, 09:28:02 PM
#3
I own a BFL Single (the FPGA which should do 832 MH/s) and it takes extra cooling to get to that speed. When it is warm (as it is in my office) it runs below that. I currently run it at 800 MH/s.
(You can upload firmwares with different speeds to a BFL Single.)
So... one could say it is overclocked when it is shipped. There is no headroom for extra overclocking (or you should use cooling methods like phase changers etc. and write your own firmware).
zxyzxy
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Re: how to overclock fpga or asics
November 19, 2012, 11:20:31 PM
#4
you can overclock ASIC by using different firmware, but really.. is it worth it? those extra few MH/s? if you have options how to cool the chip down, try it i guess
IRCCo Jeff
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Re: how to overclock fpga or asics
November 20, 2012, 11:28:03 PM
#5
Quote from: zxyzxy on November 19, 2012, 11:20:31 PM
you can overclock ASIC by using different firmware, but really.. is it worth it? those extra few MH/s? if you have options how to cool the chip down, try it i guess
I would be more concerned about the risk to the hardware. ASIC's are too expensive to play around with like that.
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