[H]ardOCP have tested Doom3 with the finest ATI and nVidia have to offer and it looks like the optimisations id built in for nVidia hardware have well and truly stuffed ATI. The GeForce 6800 Ultra was pitted against the X800XT-PE and blew it away from the off. In fact the GeForce 6800GT was also thrown into the mix and proceeded to stuff the ATI hardware as well, the GT being the Ultra's little brother and a full $£100 cheaper than the X800!!! Obviously Doom3 is bound to shine on nVidia hardware because of the licensing tie-in but John Carmack was at pains to let players on much less well specified machines know that the Doom3 experience will be every bit as satisfying. Looks like first blood to nVidia then. Now lets see what Valve can do with Half Life 2 to redress the balance in ATI's favour.