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The current estimated specs for optimal running Grand Theft Auto IV Is 2 gigs ddr ram,7200 nvidia with 128 megs ram, 3 gig processor/cpu . Direct x 9, but ten will give you more,so you might want a dx10 video card. All resource hogging junk in vista turned off. Basically you are better [...]

recap from first blog about gta vc and san andreas on linux of mine.
I have now installed the game on suse,xandros,ubuntu here is the walk through
So far it runs smoothest on xandros for me, ubuntu has great drivers for nvidia but not quite fast or smooth enough.
I am on a fresh reinstall of xandros, [...]