I feel like my server (I assume I can get a Linux client) which is a Core 2 Duo at... 2.2GHz? Gah... let me just uname -p it....
Code:
nightkhaos@deepspace9 ~ $ uname -p
Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz
... yep 2.2GHz.
Anyway, I feel I could put my server up to this, considering it has 99% uptime.
Then there is my i7, see my system, but that has a less impressive uptime, and that's usually doing something important *cough* Games *hemhem*.
Of course the only problem with farming my server is that it has no CUDA enabled graphics card... so in that i7 is probably the only choice.