This is a loud fan and it also seemed be slightly out of balance as there was noticeable vibration. The pressure from the clip is quite strong so the effect on our test rig was noticeably louder than we expected.

Looking at the waveform it is easy to see that this isn't one of the quietest heatsinks available, but then again, quiet fans rarely lead to better thermal performance.

FrostyTech Acoustic Sampling Chamber (~10 sec)
Spectral view.
Standard Waveform view. (Listen to an MP3 recording of this heatsink by clicking on the headphones)

Synthetic Temperature Test Results: *Ranked according to 100W small interface die test results.

FrostyTech Synthetic Temperature Test Platform Results
	Mfg.	Model	Ambient Temp.	27mm large copper block	15mm small copper block		27mm large copper block	15mm small copper block	Thermal pad	No. Fans	Fan Noise	Clip force
				50W	50W		100W	100W
1	Thermal Integration	TI-V77L	26.5	39.1	44.4		57.5	63.6	grey	1	med	med
2	Vantec	CCK-6027D	27.4	45.4	49.6		64.9	73.4	none	1	med	med
3	OCZ	Dominator	26.5	37.7	50.9		52.4	74.2	none	1	loud	med
4	Akasa	Silver Mountain	26.6	46.2	51.5		65.0	76.1	none	1	loud	med
5	Vantec	CCK-6035D-Retail	26.5	44.2	52.8		63.2	77.9	none	1	loud	med
6	Thermaltake	Volcano 6cu+	26.5	40.3	55.3		58.6	84.4	carbon	1	loud	med
7	Spire	5T060B1H3R	26.7	42.7	57.5		64.6	85.1	none	1	low	med
8	Fortis	A92	26.7	45.6	65.8		67.8	97.8	none	1	loud	stiff
				50W	50W		100W	100W

Of the reference coolers in this list, the Fortis Tech A92 comes in dead last, and with markedly higher thermal temperatures. At almost a 100C on the small interface die this heatsink shows its limitations in leaps and bounds. Performance on the larger interface die is substantially better so I would have to recommend that this cooler be used for those types of processors only.