TrustedReviews have looked at the nVidia GeForce 8800GTS 320MB
The 8800 GTS 320MB, then, is simply an 8800 GTS with half the usual memory. Standard clock speeds are the same as the full fat GTS with a core running at 500MHz and memory at 800MHz (1,600MHz effective). The core also retains its full complement of 96 stream processors and 20 output engines. You also get all the current buzzword additives like HDCP compliant DVI ports and component output so these cards are ready for HD.nVidia GeForce 8800GTS 320MB Review