Frostytech updated its heatsink charts, you can check it out over here.
"Frostytech's TOP 5 HEATSINK CHART has just been updated for August 2011. Just a couple of new heatsinks managed to break into the charts this summer, but what remains are some of the best performing Intel socket 1156/1155/775 and AMD socket AM3+/AM2 heatsinks out there! Don't go heatsink shopping without it! Heatsinks are ranked by lowest temperature, lowest noise and for low profile heatsinks too. Only heatsinks that were tested in the Frostytech Labs are included in these Top 5 Charts, so the ranking is 100% based on cold hard test data."