XFX has done a good job with their 7950GT XT card. It is overclocked 20MHz core and 60MHz effective memory by default, so it should provide excellent performance in comparison to default clocked 7950GTs. The silent cooling of XFX's card contributes to the low overclock I was able to obtain with the card but is an excellent choice for those wanting a silent system.
A big plus of the 7950GT is performance that rivals that of the 7900GT of earlier this year for $299, over $100 less than the MSRP of the 7900GT at launch. It is always interesting to see how video card manufacturers package their products. The inclusion of Ghost Recon Advanced Warfighter brings a top-notch current game to the bundle. The MSRP of the XT version of the 7950GT is going to be $329 or $30 more than the FX version which has the reference clocks and the regular cooling fan/heatsink of the 7950GT. For $329, the competition is the x1900XT, which I haven't reviewed yet.