Techspot posted a review on the Inno3D GeForce 7950GT 512MB video card.

The GeForce 7950GT is in some ways a bit of a disappointment. As mentioned before the 7950GT is nothing more than a spruced up 7900GT and Nvidia has done this to help along sales of the 7900 series for the next few months. The additional 256MB of onboard memory along with the increased core and memory clock speeds are going to come in handy when playing the latest and greatest games. Currently the new 7950GT costs on average $30 more than the 7900GT equivalent, which is small bucks given the boost you get. If it wasn't for the fact that the Radeon X1900 XT does exist, I would say the 7950GT is money well spent.

Although it's slightly more expensive ($20-40), the Radeon X1900XT is definitely a better performer. There is a thing or two you will need to sacrifice if you go with the red team however. For example, a dual-slot cooler is a given with the X1900XT which might bother some. This is nuisance considering X1900XT cards have been available for months now, yet no manufacturer has refined this aspect of the card. This gives the GeForce a certain edge, not only in size but the ATI cooler while usually quiet, can get a bit loud under stressing conditions.