Bitcoin - digital currency reaches dollar parity

[stoneFree]

Shika, my miner has a Intel i7 CPU but when I ticked the "generate coins" box on the client I got about 5Mh/s. Using one of the custom CPU-mining apps you could probably double or triple that but notice that's still pathetically lower than the 700Mh/s my overclocked video card puts out. In fact, the latest bitcoin client (0.3.24) includes no "generate" option in recognition that custom mining apps now far surpass client CPU mining.

This should answer most of your mining questions: https://en.bitcoin.it/wiki/Category:Mining
The quick answer is GPUs are far faster than CPUs at SHA-256 hashing. GPUs are built to quickly render a moving 3-dimensional world on your 2-D screen, a simulation, which requires lots of simultaneous calculations (I will admit to some 3D gaming in my day). BTW, these hi-end graphics cards are hard to find cheap anymore - the miners are buying them up.

Oh there's a guy out there with a killer rack setup - I should find the link for ya.
Here it is, 48Gh/s baby! http://www.youtube.com/user/diversionhobbies