I saw someone mention this cooler on the 1st page. After two days of digging through reviews this looks like the best thing out there as far as I can tell. I like the fact that it's open around the base so air can move around the NB and the rest of the area near the socket.
http://www.virtual-hideout.net/reviews/Enzotech_Ultra-X/index.shtml
http://www.xbitlabs.com/articles/coolers/display/scythe-enzotech.html
I had planned on getting scythe ninja or thermalright, but this one seems to be just as good with the added benefit of blowing more air around the board. Might change out the stock fan for a scythe flex
I found one on coolerguys.com (kind of nervous about using a site I've never heard of - anybody used them before?
I can keep my 4200 x2 stable at 2.5+, but can't seem to get it over that. Hoping something better than the stock HSF will help.
Also looking for a VGA cooler for an x1800GTO2 - anybody using the Arctic Cooling Accelero X2? I've seen some sites that recommend it and some that like the Zalman VF900 - not really sure which way to go here.
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AM2 x2 4200
Epox MF 570 SLI
1GB OCZ 6400
Sapphire x1800GTO2
Thermaltake 500W PSU
CoolerMaster Centurian case
2x120mm, 2 x 80 mm case fans