IMO the Noctua DH14 with Artic Silver 5 is the undisputed King of Coolers. I have ran Prime95 for 12 hours with a top temp of 52 degrees even while recording several TV programs as well. How could that this was possible at 3.92 GHz at 1.52v from a C2 955 and oh sooo quiet.
My previous cooler Xigmatek’s Dark Knight, which is no slouch, could only produce 3.7GHz at 1.42v maxing out 57-59 degrees.
Oh I forgot that I am also overclocking my graphics card a Sapphire 5850 as well to 1245/875Mhz, I could not do this for long because my previous cooler would peak at 61 degrees when playing games. Room temp was about 22 degrees.
I am changeling any other air cooler to match this performance inside a case, not on a test bench.
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Gigabyte GA-MA790FX-UD5P, 955 BE(C2)@ 3.92GHz 1.52V, Geil Value 4GB DDR3-1600,
ATI 5850 1GB, CM90 II Advanced, 1TB Western Digital Caviar Black, 4 HDDs, XFX 850W
My previous cooler Xigmatek’s Dark Knight, which is no slouch, could only produce 3.7GHz at 1.42v maxing out 57-59 degrees.
Oh I forgot that I am also overclocking my graphics card a Sapphire 5850 as well to 1245/875Mhz, I could not do this for long because my previous cooler would peak at 61 degrees when playing games. Room temp was about 22 degrees.
I am changeling any other air cooler to match this performance inside a case, not on a test bench.

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Gigabyte GA-MA790FX-UD5P, 955 BE(C2)@ 3.92GHz 1.52V, Geil Value 4GB DDR3-1600,
ATI 5850 1GB, CM90 II Advanced, 1TB Western Digital Caviar Black, 4 HDDs, XFX 850W