Don't worry These are top of the line processors, well bottom of the top of line family should i say(which is still pretty good). I'm really happy with mine. Even when i did run it at stock speed it was fine, which was only for like a week. They should take any game you throw at them, that out and prob will come out this year. The main thing you need to worry about is your graphics card, if you intend to play games that is.
I recommend a 8800gtx is top of the line but u need the $$$ next down the 8800gtx which will also still cost a bit .. the 7900's series ... is good cards 7900gt is good for price and performance i run a 7900gtx which i got for a bargin but if i didn't get it for what i got it for(not stating price cause i live in new zealand and will just confuse everyone) i woulda gone for the 7900gt .. the gs version is same family but just a little underclocked. the 7600gt' s are the best buy for price and performance(what i recon there dead cheap but still got some go in them). but there getting mid range graphics, if your skimp for cash then maybe go for something like a 6800gt or a 6600gt they were once top of the line(but wasn't everything else) i donno how much they go for now days but there still ok i guess but 1 card i dont recommend is the 7300 series... they ment to be budget, but half decent cards .. but i think they just turn out to be crap they perform worse than the 6600gt and there more expensive ... all these are direct x 9 cards only the 8800 are direct x 10 capable if u want a direct x 10 card you'll have to wait until the other 8 series card comes out or when ATI releases there x2K series cards.....
I'm not a huge fan of buying ATI cards, I have nothing against the company or productions or quality, its just in price and performance i think Nivida just does a better job.