[citation][nom]lassik[/nom]The 650 GTX is around 10% faster than the 7750, the 7770 however is around 10% faster than the 650 GTX. Nearly every benchmark shows this.[/citation]
That makes no sense because that is a contradictory statement. Furthermore, on average, the Radeon 7750 is a little better than the GTX 650 according to Tom's, granted they're close enough to say that they trade blows. If this is factory overclocked, then it'll probably either trade blows with the 7750 or inch it out on average, but it certainly wouldn't be nearly a 30% difference except maybe in a few cases and even that much can be mostly rectified by comparing it to a well factory-overclocked Radeon 7750.
Also, please get the naming right. For all cards after the 9000 series for Nvidia, the GT/GTX letters are prefixes, not suffixes.