5 ms·

How many megahashes this hardware computes?

• wmf 14y ago
  Not enough. Don't bother.
• helpbygrace 14y ago
  I agree with you. This might be good for bitcoin mining. :)
  • lucb1e 14y ago
    The real question is: How much power does it consume compared to its hashing power?
• Tuna-Fish 14y ago
  Much, much less than the specialized ASIC platforms do.
  • helpbygrace 14y ago
    But when we consider the consuming power of ASIC platform, I think this board has strength. They said this board consumes 5 watt for typical jobs. https://en.bitcoin.it/wiki/Mining_hardware_comparison https://en.bitcoin.it/wiki/Mining_hardware_comparison
    • IanCal 14y ago
      It's nowhere near fast enough. My 7970s can push out about 1.3Ghash/s and combined they are capable of around 7 TFLOPs. When (/if) they release the BFL Jalapeño it'll run at 5 Ghash/s and be powered by USB. 90 GFLOPs is equivalent to a decent processor, but nowhere near powerful enough for bitcoin mining.
    • Tuna-Fish 14y ago
      > But when we consider the consuming power of ASIC platform, I think this board has strength. No, it can't possibly have. SHA is half bitshifts-by-constants. On an ASIC platfrom, those essentially refactor to no-ops. There is no way, no how general-purpose hardware could ever possibly get anywhere near even a piss-poor special purpose ASIC for this task. If you think otherwise you simply don't understand the domain. Those 600-watt ASIC systems contain multiple chips and run at tens of GHashes/s. That 5-watt chip, if it's very, very good, might maybe break 40MHash/s.
• DanBC 14y ago
  They say 90 GFlops. (https://bitcointalk.org/index.php?topic=26824.20;wap2 https://bitcointalk.org/index.php?topic=26824.20;wap2) > For example a Radeon 6990 has 5.2 gigaFLOPS of computing power[1] and yields roughly 800 megahash/s in bitcoin mining. That was in July 2011. Mining is harder now.
  • mas921 14y ago
    Radeon 6990 is 5.1 TERAflops (5099 GigaFLOPS) ... several orders of magnitude faster than this thing http://en.wikipedia.org/wiki/Radeon_HD_6000_Series#Northern_Islands_.28HD_6xxx.29_series http://en.wikipedia.org/wiki/Radeon_HD_6000_Series#Northern_...
  • trotsky 14y ago
    Cayman XT [Radeon 6970] outputs 2.7 TFLOPS in Single-Precision and 675 GFLOPS in Dual Precision. [1] I think the 6990 is just two of those, or at least that's normally their convention. [1] http://www.brightsideofnews.com/news/2010/12/13/amd-radeon-hd-6970-unveiled.aspx http://www.brightsideofnews.com/news/2010/12/13/amd-radeon-h...
  • sp332 14y ago
    Doing a single hash isn't harder though. Increased difficulty just means you have to do more hashes. So the numbers given should still be about right.
• vidarh 14y ago
  I love this board, but keep in mind that the entire premise of this board is parallel execution of _separate instruction streams_. From the performance people are getting from GPU's for bitcoin mining, I presume the calculations can be done extremely parallel with few instruction streams - for that a normal GPU is likely to be a far better choice.
• deleted 14y ago
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