techPowerUp posted a review on the Zotac GeForce 8800 GTX OC Edition

Zotac's new GeForce 8800 GTX OC Edition comes factory overclocked with clocks of 630 MHz core and 1000 MHz memory. This is a nice increase over the standard NVIDIA clocks, especially if you consider the small $20 premium and that you don't lose your warranty. For users who are not willing to spend a lot of money for a GeForce 8800 Ultra this card seems to be a viable alternative.

Zotac GeForce 8800 GTX OC Edition Review