Arhlon64 stock heatsink

[so_cal_forever]

How good is it? I'm thinking of getting a setup based around a 3000+, and I was wondering how far it could be used in overclocking. I've heard of some people getting an ok OC out of them. I'm also probably going to be gettting the Thermaltake Polo12 PSU, which comes with a heatsink w/a copper base, which I'd expect to be mildly better.