abit AX78 supports Crossfire - Kind of

Abit has managed to get Crossfire working on the AMD 770 based board, though AMD doesn't grant official support. They used the same method already used on other chipsets, like the P35, which consists in using a full x16 slot running at only the x4 lanes that the chipset supports. This way we have less bandwidth available to the second card and a small loss in performance, but Crossfire works.
In this case the chipset supports PCI-Express 2.0 lanes, so the x4 slot has the same bandwidth as an x8 PCIe 1.0 slot, provided that you use PCIe 2.0 graphics cards. This way, and while graphics cards don't get bandwidth hungry again, the performance drop should be less noticeable than with the old 1.0 version.
Suggested pricing for the board is expected around €75.
Keywords: abit AX78 AMD 770 Crossfire