Re: next gen kepler to support dx 11.1, also take a year to rollout all cards
You can't really compare different architectures that easy, especially when one is not even out in the wild. It will probably perform around a 7950 in most situations where bandwidth limitations aren't too apparent. It could easily do better, I don't know, but unless they have some crazy efficient cache setup it's going to fall short whenever bandwidth is a concern.
It also sounds like they are following suit with one upping the model numbers (or two in this case, technically) like AMD did last gen.
__________________Q9550 w/ Thermalright Ultra 120 Extreme | 4GB Team Xtreme Dark 800MHz CL4 | Gigabyte X48-DS5
ASUS Radeon 5870 | 240GB OCZ Vertex 2 | 1TB WD Green Power | BenQ V2400W 24" LCD
Corsair HX-1000w | LG GGW-H20L 6x DL Blu-Ray Burner/HD-DVD Reader | Coolermaster Cosmos S
Acer TravelMate 4002WNLCi: Pentium M 725 @ 1.6GHz | Mobility Radeon 9700/64MB | 2GB DDR400 | 15.4" WXGA