mbgringo:
You'd think that, but seems to really struggle when i use a DVI/HDMI cable (pic is grainy and doesn't fit screen properly, it is a 27" Evesham tv so its prob that, but xbox and ps3 look great through HDMI connection . . ), plus i do want to see what all the Crysis fuss is about on a decent setting . . . . .
I think that's probably just your settings, a card that's struggling to process an image will just slow down - it won't go grainy.
Crysis can bring even the fastest card to it's knees if you turn every last setting on but any high-end card should be reasonable for playing it on high. As you're having trouble with an nVidia card then perhaps an ATI card like the 3870 512mb would be the best choice?