Underperforming GTX 570 Ti

That should be 560, not 570.

Specs:

i5 650 @ 3.2ghz
Foxconn H55MXV
MSI N560 GTX-Ti (OCed to 950/2085)
Windows 7 Ultimate 64 bit
296.10

Playing 1920 x 1080 resolution.

I just upgraded from a GTX 460 768mb to the 560 mentioned and I don't seem to be getting the frames that other people purport to have. Granted I know I'm using a dual core but for games such as Crysis Warhead I would have thought it would have been sufficient. Others with the same card appear to get very playable frames with everything maxed on DX10 whereas I seem to be getting around 20fps at the best of times (a few more at DX9 but not much).

Witcher 2 on max (bar ubersampling and cinematic DOF) nets me around 25 - 34 which again striked me a little low, even dropping to 20fps when confronted with God rays (this all might be attributed to CPU but even at lower resolutions I never get close to 60fps).

When running Crysis Warhead, task manager reports 30% odd CPU usage and Afterburner reports 99% GPU usage.

I've run Driver Sweeper and disk cleanup. Seemed to make no difference.

Am I expecting too much of the card or is something amiss?

Thanks, Joe.