Anyone looking for a high end system now should really wait IMO. The Asus A8N-SLI motherboard is one example of the type of thing coming out pretty soon. Dual 9800GTs are possible (if you want to spend that kind of cash), upgradeable for quite a while yet. PCI-Express I wouldn't do without with a new PC, there's no real point in getting a new AGP M/B, despite the fact it'll be as quick right now (though SLI will be quicker). I suppose if you need a AMD 64 system right now, you've got no option though.