motherboard - A PCI Express 3.0 Video Card into a PCI-E 1.0 x16 slot - Super User
I rolled back my edit, but it still doesn't hurt to purchase from a seller with a generous return policy in case you're unfortunate enough to get a "PCI Express 3.0" card that isn't fully compliant with the spec. – rob May 22 '12 at 1:12...