I'm very happy so far with how it turned out. It's quiter, loads faster, and even my girlfriend was wowed by the crysis demo (she insists the goal of the game is saving the chicks and turtles from the evil koreans that want to eat them).
Thanks to all for the good advice. I'll post two screens to show you what I used to see in PR compared to now. It is simply a different game. The shadows still spook me all the time, since I've never seen one in PR before

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In framerates I went to 20fps average (and a headache) to 90+ fps ( 1680*1050, high without AA currently, need to test that still). Most of you can't imagine the difference that makes I bet.
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If a cluttered desk is the sign of a cluttered mind, what is the significance of a clean desk?
Laurence J. Peter (1919 - 1988)