I am curious if my CPU (C2D Dual E7200 OC'd to 3.2GHz 1600/800x8 multi) is limiting the performance of my GPU (BFG GTX260 MaxCore) @ 1920x1200 resolution. Reason for my question is I am considering upgrading to i7, but only if the gain will justify the 1 grand in cost. During my benching of Crysis Warhammer with details at high I only saw a 1 FPS gain between stock CPU 2.5 vs OC'd 3.2 @ 1920x1200 4xAA/8xAF.
Seeing only 1FPS gain between stock and OC, I'd say your CPU is NOT limiting the GPU.
^+1. If you want to get better FPS you'll need CrossFire/SLI.