BCC Hardware posted a review on the eVGA 7900GT KO Video Card

When you realize that a reference 7900GT outperforms a 7800GTX and then take into account that eVGA has clocked it up even further, you can't help but be impressed. If you're an enthusiast, you'll probably push the card even further and once again, eVGA leaves us impressed. We were able to push this GPU core another 95MHz and the Samsung GDDR3 memory clocked up an additional 160MHz. At the end of the day we were able to run the core 32% above reference speeds and the memory was rock solid when clocked 26% above reference speeds. This makes the eVGA 7900GT KO one of the best valued 7900GT's on the market today.

eVGA 7900GT KO Video Card Review