i've got an all-copper zalman flower on my 2400@2.13. runs around 37deg C at idle (and seems to stay there through most of my workage). gaming i don't think i've seen it over 45. something to check out, but you do have to be careful. it's considerably more heavy than the amd max weight spec.
they make an aluminum and part copper one that's lighter, have no idea how it performs.
oh yeah, i did have some really nice temps for a while with the side cover off and a nidec 120mm fan on it, but that little bitch was TOO LOUD. i couldn't stand it. but it kept things cool
