Poorly, very poorly. The HD2600 Pro is slower than my old X1900XT, and that ran the game so badly I didn't play it until I upgraded. It will run, but you'll have to cut the detail and resolution right down.
Yeah, your CPU and RAM are fine but your video card was a bit of a mistake on AMD/ATi's part. The minimum card you should use for Crysis would be an HD3850 512MB or an 8800GS 384MB. And both of those will still need to use medium settings to play at a decent resolution.
Put it this way, my video card is several times faster than yours and I still get only a 35FPS average with high settings at 1650 x 1080.
You need a monster rig to run Crysis well as it's a poorly coded game. Yes the graphics are amazing, but many other games easily challenge it in graphics and perform way better to boot.
Using all 'High' settings in XP (so DX9, not DX10) with an HD3870, faster still than the cards Estuansis listed, I get between 10 and 24fps. Crysis is just an absurdly demanding game.
