Curiously, the component of this heatsink that does the work is silent, but the fans needed to remove the heat are noisy. Given the way this cooler operates I'd be very tempted to submerge it in solution and ditch the fans altogether... perhaps some one will try a liquid cooled variant of this heatsink soon. For the moment, the twin fans add a lot of noise to the system environment, but not enough to really deafen. Thankfully. Listen to the Radiator 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	Swiftech	MCXC370	22.3	42.0	46.1		60.3	75.6	none	1	med	hard
5	Akasa	Silver Mountain	26.6	46.2	51.5		65.0	76.1	none	1	loud	med
6	TS Heatronics	SCR325-2F	21.6	42.9	46.7		63.7	76.4	none	2	loud	stiff
7	Vantec	CCK-6035D-Retail	26.5	44.2	52.8		63.2	77.9	none	1	loud	med
8	Thermaltake	Volcano 6cu+	26.5	40.3	55.3		58.6	84.4	carbon	1	loud	med
9	Spire	5T060B1H3R	26.7	42.7	57.5		64.6	85.1	none	1	low	med
10	Thermalright	CB-6L	24.6	50.3	57.7		73.8	92.7	white pad	1	low	med
				50W	50W		100W	100W

The SCR325-2F is very good cooler that offers comparable performance to several others in the market but it is by no means top of the line. Given that this technology is still quite new, I'm considering the Radiator a first generation cooler, and one which has lots of room for optimization to provide better competition. Compared to the other coolers in this range it has some of the smallest, and lowest RPM fans.

On another level, the copper plate on the base of the heatsink seems to be sized for the good old socket 370 PGA Celerons, and that leaves me with a suspicion that this design is a little older than most of us might realize. That's just a hunch, but I'm guessing this technology has plenty more room to maneuver.