Do you know why the ATI boards perform better? Nvidia has devoted more transistors and R&D to their GPGPU functions. Has no one coded directly to CUDA?
I don't know. It's always been a mystery to me. People have been surprised that I prefer ATI for parallel computing since, "Nvidia is so much better at it". (You probably looked, but the mining hardware comparison ATI consistently better as well.)
There seems to be quite a bit of a Bitcoin interest around here, with several articles about it already: [1 2 3 4 5 6 7]
I propose that links and generic Bitcoin comments should be posted here, instead of making a new discussion thread for each interesting article about the subject.