I've been running SH3 (all modded up) on a 2.4 Ghz with 1 GB ram, and a Radeon 9700 128mb card. This machine is basically an antique, but runs SH3 fine. I don't have any AA or AF on, but it's fine - I run her at 1280x960, and she looks great. Basically, it's my dedicated SH3 machine.
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