The Inq reports the upcoming GeForce 8800 GT will score about 10,800 in 3DMark06, which is very good for a $249 mainstream card if you take in mind that the much more expensive GeForce 8800 Ultra scores 12,500 in the same test.
The site also reports that the ATI RV670 will win this battle as that card scores 11,400 3DMarks:
A reference board from Nvidia is capable of scoring 10,800 3DMarks, while a reference board from ATI will score around 11,400 3DMarks, or a clear 550-600 points advantage.
This is a massive leap over previous-gen parts. The current generation's high-end performer from Nvidia, the 8800Ultra scores 12,500 points. Seeing a mainstream, $250 part scoring barely a thousand less than a current $599 card only makes us wonder how those owners that coughed up so much will feel.
When it comes to ATI's part, you know what to expect in this synthetic benchmark - outscoring Radeon HD 2900XT is a default mode of operation for RV670XT. At least in lower resolutions.