Ummmm wow... Picture Viewer? But seriously there's no real scale you can use for Optimization, too much factors into how a game runs.... at least for all I know... I'd say Crysis is about the best bang you'll get for the graphic buck, or maybe Just Cause 2 --- I wonder what would happen if I disputed a moderation by saying that it was my cat that posted the obscene material ._.
When I got HL2 I had a like 1.7 GHz cpu and a Radeon 9000 and it ran beautifully despite barely making the minimum requirements. And the graphics were incredible. --- This message from an unbiased boardgamer. Real men use Alta Vista.