Windows7 Ultimate 64-bit here, no problems with games, and i have installed at the moment: Dungeons and Dragons Online, The Lord of the Rings Online, Halo 1, Call of Duty Modern Warfare 2, Counter Strike Source, Guitar Hero III, MAME Emulator (yea, i like to play Pac-Man too). I don't think you will have any problems running games, just remember to run them as administrator. (my computer is two years old by the way)

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