As for as I know this is one of the first GeForce 6800Ultra previews on the internet:
Today the wrapping comes off the box and NVIDIA's GeForce 6800Ultra (codenamed NV40 GPU) video card is revealed. To learn all about what's new in the NV40 please refer to our NV40 tech article. That article will tell you about the new features and what they mean. Remember that the NV40 technology will encompass a whole range of cards from the value market to the enthusiast market. The only feature difference between these cards will be regulated framerate performance by reducing core clock frequency, memory frequency, and also reducing the number of pixel pipelines to reduce transistor counts in order to bring down silicon costs. This new series is called the "GeForce 6" series. The specific video card NVIDIA has provided to us for this preview is the GeForce 6800Ultra, the highest level of the GeForce 6 series GPU currently. This article is a preview, not a review, since this is a reference video card from NVIDIA and cannot be purchased through the normal channels. That said, every GeForce 6800Ultra video card from retail partners should perform very closely to what we are showing you here today on a comparable system.