My RAM is already overclocked, that's originally DDR2-667.
My video card is already overclocked, running it at 820/1000. About as fast as a stock GTX 460 1 GB, if not faster.
As you can see, Warhead is much less CPU dependent than the original Crysis. I gained a significant amount of FPS when overclocking it even when I ran my GTX 460 at stock settings. Celpas, what are your Warhead benchmark scores? I would assume my 460 scores higher than it there, whereas in Crysis you beat me due to my vastly inferior CPU.
In Crysis, my biggest FPS jump was when I overclocked from 2.33 to 2.8 GHz, even at 1080p.
I know 1920x1080 is supposed to be highly GPU bound, but as I have learned, you will have to have a decent CPU no matter what. I already felt that a GTS 450 would have been the most optimal upgrade from my old HD 3850 without bottlenecking my rig. However, a 450 isn't strong enough for 1920x1080 at High settings so I got the 460.