Don't get confused with runnig benchies and actual gaming. benchies like this should only be taken as giving a sort of ballpark figure for you to compare with other ppl to see if your pc is running correctly. Also a lot of these benchies give inflated scores when used with a quad core cpu as opposed to a dual core (I'm not sure if this benchie does but "06" certainly does). Also some benchies favour ATI cards and other Nvidia cards.)
And i can confirm "that for me anyway" its pointless to have a cpu over 3.2ghz in most games 'cos theres no increase in performance at all above that (I had a 8400 @ 3.825ghz and now I have an e6700 @ 3.2ghz and I get the same performance.
I'd be inclined to look at your catalyst settings meself, maybe you've got some options set to quality not performance, or AA enabled?