Hey i was throwing the idea around to pump up my x800xl but not sure how much I can get out of it, everyone says artic is the best but is it worth it to pay 30 dollars for a (what people say) minimal amount of overclocking from stock. right now I am running 409 and 523 with about 4950 in 3dmark05, how much more would I expect to get if I get one of these aftermarket coolers? thanks