They did make AGP versions of current cards. AFAIK there's an AGP X1950 pro and a 7800 something. But these will be the last of the AGP cards because dx10 cards are designed to do more general purpose computing. This requires lots of bidirectional bandwidth, something the 1.0 spec of PCIe mearly adequate for. Since a 16x PCIe slot offers 8GB/s total bandwidth (4GB/s up/down), 8x AGP's 2.1GB/s simply won't cut it.