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Well, I HAVE looked at Doom 3 benchmarks, and although I usually like ATI more as a rule, they really do poorly here. I mean, their drivers have just been getting worse and worse lately, for starters. So if you can afford a 6800 (even just a vanilla 6800, not a GT or anything above), you might want to go with that. I don't know that I can recommend any of the GF FX series, since I am still not fond of their IQ. But if you can't get a 6800, go for the 9800 Pro, its still a solid card.
Also, I highly recommend you go with a 256MB model, and I've never said that before, ever. Normally it is a waste of money. But if Doom 3 is important to you, it will make a difference. Heck, their highest quality texture settings (uncompressed) require a card with 512MB of memory, and there AREN'T any yet! 64/128MB cards require heavier compression, although it should still look and run very well on even somewhat outdated cards, because of the multiple path approach Carmack took.
As for motherboard, any decent nforce 2 400 board would be a good choice. After that, how well it can OC is largely up to you. As it290 said, a 64-bit chip will give you better overall performance, but it isn't going to make nearly as big a difference in gaming as a good graphics card. |