The title pretty much says it all :P
I have an i5 2300 SB (2.8Ghz) on an MSI P67A GD53, 4GB RAM and an 850w PSU.
I have only played BF3 so far and the GPUs were sitting at about 50% usage, never exceeding 60% at 1080p... Needless to say I'm worried having just spent quite a bit on the new GPUs...