Radeon HD 6970 is 10 - 20% faster than GTX 480

Update: Hold the presses, it's faster
Geforce GTX 580 is 15 percent faster than 480

Sometimes up to 20
Point of View / TGT GTX 480 Beast reviewed

Review: GTX 480 Beast is the fastest Fermi around
MSI intros Twin Frozr GTX 480

$499
PoV/TGT GTX 480 Beast is the fastest Fermi around

Preview: GTX 480 BEAST’s ticker runs at 810MHz
Point of View / TGT GTX 480 Ultra Charged tested

Review: The fastest air-cooled GTX 480 around
POV/TGT rolls out fastest GTX 480

Updated: Ultra Charged with Triple Fan Cooling
MSI's N480GTX Lightning gets pixellized

With new TwinFrozr III cooler
MSI working on new graphics cards

GTX 460 Hawk, GTX 480 HydroGen and GTX 480 Lightning
Nvidia GTX 480 512SP tested

Five percent faster and 204W hungrier