- Apr 29, 2002
It is more than enough. Stock 7870s are 175w cards. You could easily add the cpu in there as well and even overclock a bit.
People tend to overestimate quite a bit on how much they really need.
OTOH it's better to run well under the max rating than push it to the limits.
I recently got a used PCP&C Quad 750 for my main/GPU folding rig, but decided to keep it in reserve for my next project. I'd love to build a 2P Xeon or 4P Opteron workstation one of these days.