I beleive Doom 3 on Ultra settings uses at leat 256MB, if not more. And I pretty much know for a fact that X-Plane 8's best textures need 700+MB to run smoothly. So yes, that kind of memory is needed, but I'd rather invest in other things than 512+MB of VRAM right now. Talk to me again in 10 years though LOL...
AGP won\'t fit in PCI-E... unless you use a really good hammer. ~Trotter