GPU's are obviously more cost efficient than general purpose x86 CPUs. But as we are learning, specialty hardware using very little power can be an extremely e

GPU's are obviously more cost efficient than general purpose x86 CPUs. But as we are learning, specialty hardware using very little power can be an extremely effective hashing device hash as butterfly labs is doing with SHA-2[1]. If a similar device were developed for SHA-1, I'm not crypto-proficient enough to know the difference, but I imagine it would be extremely efficient as well. [1]: http://news.yahoo.com/butterfly-labs-announces-next-generation-asic-lineup-054626776.html http://news.yahoo.com/butterfly-labs-announces-next-generati...