I don\'t think Nvidia really needs to worry about proving anything for a few reasons.
(1) For the most part, the people excited about DOOM 3 are not the same group of gamers excited by HL2. They are both different FPS.
(2) I am sure with some better drivers released near HL2 it will be almost as good as ATI\'s. Probably not as quite due to Valve\'s love and dediction to ATI. (
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)
(3) The extra pipes and SM 3.0 will make Nvidia\'s newest card the more future proof one.
I will be buying a 6800Ultra come next week , I\'ll keep everyone posted on what I think of it.