Videocards ar sortet by slots. There are AGP, PCI, PCI-e and maybe some more. That motherboard is okay for pci-e videocards, no matter what memory type it have
Eleanor SpeedGT: You had soc. 775 or 478?
Mihajlo: You could buy the fastest 478 (if you found one), but I doubt it will be equal to some mid range soc 775 CPU