Quote Originally Posted by Your_Boss View Post
GTX480 = 512SP, 650MHz core/1350 shader, 5870 = -10%~+15% (very low availability. For reviewers and PR) $599.99
GTX470 = 480SP, 675MHz core/1450 shader, 5850 = +15~+20% (Better avail. Most widely sold over GTX480) $449.99

Just guesses!
You're basically saying a GTX 470 will perform on par with a HD5870, but a GTX 480 can be 10 percent slower than that in some cases?