Vista carries a significant performance drain. XP will provide you faster performance in most apps, and leave you with more free RAM. A 64 bit OS offers no advantage with 2 gigs RAM, but if you eventually plan to exceed 4 gigs (including vram), then you'll want a 64 bit OS.
[ QUOTE ] so. i have. a core2duo E6600, 2 gigs of SLI ram, 8800gts. harddrive 320gb. its for gfx use. 3d apps. photoshop. aftereffects that sort of jazz [/ QUOTE ] What's SLI RAM? Looking at your specs I'd recommend XP, 32-bit. 64-bit if you plan on upgrading to 4 gigs of RAM (which you should consider at this point). I've…