How will Crysis run on this?

*Intel® Core™ 2 Quad Q6600 @ 2.4GHz 1066FSB 8MB L2 Cache 64-bit processor
*MSI P35 Neo2-FR Intel P35 CrossFire Chipset LGA775 FSB1333 DDR2/800 Mainboard w/GbLAN, USB2.0, & 7.1Audio motherboard
*Sapphire Radeon HD 3870 512mb graphics card

i would like to know how well this can play on max settings (in fps) for Crysis and if this is a good computer for gaming with NO OVERCLOCKING. Thanks

Exactly, this is the key dude.

i'd stick with high settings instead of 'very high' settings. During most of the Assault mission (lots going on outdoors) frame rates could get in the single digits with max settings and reasonable resolution of 1280x1024. I guess i'd rather play at native resolution with high settings than play something weird like 800x600 at very high.
By the way, I play at high settings and get around 25 fps with no overclocking with my native resolution.

Will run 1900x1200 smooth with high shaders and medium everything else on Dx9.

At lower res you could bump up the detail some.

Also, yes that is good for gaming. Dont base your selections on just Crysis though because no gaming graphics card can play it on max settings/ native resolution at the optimal fps of 60; nevermind adding any AA or AF.

If your computer will strictly be used for gaming with no overclocking, you may want to take a look at an E6750 instead. Most games don't use 4 cores; the E6750 is $60 cheaper on newegg while running at a faster frequency.