CrossFire was a bit of a disappointment, but I was fairly sure that ATI's X1800 XT board would put up a better fight against NVidia's 7800 GTX. And I was mostly right. The two cards were pretty much neck and neck throughout our tests.
For example, looking at tests in Doom 3 run at 1600 by 1200 with antialiasing turned on, ATI's X1800 XT posted 42 frames per second compared to 49 fps for NVidia's 7800 GTX. Our Far Cry test, run at the same settings, saw the X1800 XT post 64 fps to the 7800 GTX's 51 fps. And in our Unreal Tournament 2004 test at the same settings, the 7800 GTX posted 72 fps while the X1800 XT hit 69 fps.
In the big picture, those scores are pretty close. There's no clear winner, to my mind. It's worth pointing out, though, that the ATI card included twice as much RAM (512MB) and has a list price of $549 versus the NVidia card's actual $480 street price. Rumor has it NVidia and its partners will eventually roll out a 512MB version of the 7800 GTX, which would make for a more even playing field.