ATI bridge chip on way, it seems
 

ATI hit Nvidia very hard for its AGP to PCIe bridge cards but now has decided to button its lip about it. It learned that Nvidia made things right as it is already shipping its bridge chip-based cards and passing SIG tests. With this bridge chip you can make PCIe and AGP cards from similar silicon.

http://www.theinquirer.net/?article=18853