TweakTown take a look at  the XFX GeForce 7900GS Extreme:

Then came the time to check out overclocking and we were simply shocked. It is not uncommon for Coolbits to go a bit stupid and go higher then it should - a fire up of 3DMark06 though at 1600 x 1200 saw no artifacts and some unreal results. Continuing to test performance was just extremely fast with no signs of artifacts or freezing. The XFX GeForce 7900GS now actually felt EXTREME!

With that said though, if you clearly are against overclocking, it's not the best card for the price. The Radeon X1900GT does perform well and at a very competitive price - it can clearly offer some competition for the GeForce 7900GT.

- Pros
Overclocking master!
Brilliant performance when overclocked - passes more expensive cards!
Competitive pricing and available now (love no paper launch!)
Dual DVI and Dual Link
HDTV
Quiet cooling
SLI

- Cons
Stock performance isn't all that exciting
Bundle is lacking a little something extra

In related news, also Motherboard.org posted a review on the XFX GeForce 7900GS PV-T71P-UDE3 Video Card.