his cpu is the issue here at such a low resolution the GPUs should be doing far better the only hang up is the CPU being slow as molasses
with Andantechs bench to go with 1680x1050 nearly double the OPs resolution so CPU bottleneck is lesser here.
Far Cry 2 Medium Settings
AMD 9850 -39fps
Intel 2500k - 79fps
Left 4 Dead 2 Max Settings
AMD 9850 -92fps
Intel 2500k - 142fps
Crysis Warhead Mainstream quality Physics on Enthusiast
AMD 9850 -61fps
Intel 2500k - 91fps
and thats just averages the Minimum FPS is going to be much much lower.