Transaction

j"1LAnZuoQdcKCkpDBKQMCgziGMoPC4VQUckM<div class="post"><div class="quoteheader"><a href="https://bitcointalk.org/index.php?topic=846.msg9981#msg9981">Quote from: lfm on August 17, 2010, 09:33:14 PM</a></div><div class="quote"><br/><div class="quoteheader">Quote</div><div class="quote">The successful coding of the sha-256 algorithim into a fpga and recoding of the bitcoin client's generation function to use one or more such fpga's would produce a khash per second rate that no desktop could match.&nbsp; It would look like a super-computer from our perspectives.</div><br/>A lot of hand waving there. For some concrete numbers it quotes 53 MB/s and since we only hash 192 bytes at a time, you might think it would do 27 mhash/s (but it probably would be less) which I beleive is actually within the range of a desktop with a couple GPUs.<br/><br/></div><br/><br/>Yes, but there are two points that you overlooked.&nbsp; First, the software transceiver ususally requires four of these chips.&nbsp; (two for receive and two for transmit, one does digital signal processing and the other does digital filtering of the raw signal.&nbsp; Said another way, one is the virtual mike/speaker and the other is a virtual tuner.&nbsp; Not all such software radio setups need four, however)&nbsp; So if a ham has four of these, all four could be programmed to this end.&nbsp; The other point is one that I didn't explicitly mention, one FPGA does not equal only one sha-256 processor.&nbsp; It is possible, even likely, that more than one such processor could be programmed into a single FPGA chip.&nbsp; These chips are fairly large so that they can 'virtualize' some pretty complex logic circuts, and a talented programmer could program one chip to be several sha-256 processors running in parrallel.&nbsp; All this, and his main CPU and GPU are still available if still more Kh/s are desired.&nbsp; Any hacker with the skills to program one or more GPU's in the same system to crunch hashes is already elite, and doing multiple sha-256 cores on a single FPGA would be child's play.&nbsp; And we already know that there is some elite talent within the Bitcoin community, some who desire to run it, and some who desire to break it.</div> text/html