Source: Jon Peddie Research [email]
quote: Crossfire stuttering has been fixed in the Hawaii based parts, it was a technical challenge in the older GCN skus because of the Crossfire bridge. In Hawaii, they're using the PCIe bus directly.
quote: AMD is releasing this technology in phases. The driver today, Catalyst 13.8 Beta is Phase 1. In Phase 1 Frame Pacing only works at resolutions up to 2560x1600 on a single display. That's right, Frame Pacing will not work on CrossFire in Eyefinity resolutions in Phase 1. In Phase 1 only games that are DX10 and DX11 are supported, no DX9 games will work with Frame Pacing in Phase 1. Phase 2 of the driver will come later this month. In Phase 2 CrossFire in Eyefinity resolutions will be supported. There will also be support for DX9 and OGL games in Phase 2. So if you game in Eyefinity, or across multiple displays, or higher resolutions than 2560x1600 then Phase 2 driver is what you will have to wait for. Also, if you want support in DX9 games.