The reference 7800GTX 256Mb from nVidia comes with 430Mhz GPU and 1.2Ghz memory clock. EVGA´s 7800GTX KO version has 490Mhz GPU and 1.3Ghz memory clocks; nVidia´s 7800GTX 512Mb does better with 550mhz GPU and 1.7ghz memory, the KO version of EVGA sits in the middle GPU clock wise..



Link: Madshrimps