The Guru of 3D posted a review on the XFX GeForce 7900 GTX XXX Edition video card

Now, x-rated as it sounds this has nothing to do with that particular industry (sorry?). Confusing? Yeah, I think XFX has the most difficult to understand product line-up. The XXX edition of the GeForce 7900 GTX 512MB from XFX means you receive a card that has been pre-overclocked by default, so there's no need for you to overclock manually. Get this, a 700 MHz core and 1800 MHz memory frequency.

XFX GeForce 7900 GTX XXX Edition Review