They used the following test system:
Here are the results. They ran 3DMark06 with a 1280 x 1024 pixel resolution, 4x AA and 8x AF:Intel Q6600 overclocked to 3600MHz (400MHz x 9) NVIDIA 650i Ultra based motherboard DDR2-800 memory running at 5-5-5-15 Windows XP SP2 NVIDIA ForceWare 167.26 drivers
3DMark06 | 8800 GT 512MB | 8800 Ultra 768MB |
3DMark score | 9648 | 11611 |
SM 2.0 score | 3982 | 4643 |
HDR/SM 3.0 score | 3343 | 4391 |
CPU score | 5544 | 5529 |
The scores look pretty good if you take in mind that the 8800 GT will cost much less than the Ultra card.