The Bitspower NP60CS uses a 20mm thick 60mm fan that produced a moderate amount of noise -but nothing really that bad. To listen to this heatsink anyway, click on the pair of headphones. There was a lot of static in this recording for some reason, so don't pay much attention to the waveform image as it is really unrepresentative.

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	Swiftech	MCXC370	21.4	38.3	43.4		53.5	65.7	none	1	med	med
3	OCZ	Gladiator	21.4	33.3	47.3		50.6	70.3	none	1	very loud	med
4	Bitspower	NP60CS	23.4	41.6	46.8		61.9	72.5	none	1	med	med
5	Vantec	CCK-6027D	27.4	45.4	49.6		64.9	73.4	none	1	med	med
6	Swiftech	MCX370	22.3	42.0	46.1		60.3	75.6	none	1	med	hard
7	Akasa	Silver Mountain	26.6	46.2	51.5		65.0	76.1	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
11	Fortis	A92	26.7	45.6	65.8		67.8	97.8	none	1	loud	stiff
				50W	50W		100W	100W

I was a bit surprised by just how high the Bitspower NP60CS was able to rank in the initial set of test results above. Given the performance of their previous all aluminum heatsinks, the NP60CS is a marked improvement in the right direction, and one that could make this manufacturer a competitive force.

Rise Above Ambient Temp. (c)
	Mfg.	Model	27mm large copper block	15mm small copper block		27mm large copper block	15mm small copper block
			50W	50W		100W	100W
1	Thermal Integration	TI-V77L	12.6	17.9		31.0	37.1
2	Swiftech	MCXC370	16.9	22.0		32.1	44.3
3	Vantec	CCK-6027D	18.0	22.2		37.5	46.0
4	OCZ	Gladiator	12.0	26.0		29.2	49.0
5	Bitspower	NP60CS	18.1	23.3		38.4	49.0
6	Akasa	Silver Mountain	19.6	24.9		38.4	49.5
7	Swiftech	MCX370	19.7	23.8		38.0	53.3
8	Thermaltake	Volcano 6cu+	13.8	28.8		32.1	57.9
9	Spire	5T060B1H3R	16.0	30.8		37.9	58.4
10	Thermalright	CB-6L	25.7	33.1		49.2	68.1
11	Fortis	A92	18.9	39.1		41.1	71.1
			50W	50W		100W	100W

Even the mighty OCZ Gladiator falls victim to the Bitspower NP60CS. The only reason why the Gladiator still remains in position four of this list of reference coolers is that it performs better on the larger interface die. In those cases, the Bitspower is limited, and fall short a few degrees, but not out of spec all things considered.

For a small manufacturer it looks like Bitspower have a very good heatsink on their hands, not-quite a high performance heatsink, but still a very good cooler, and one worth considering next time you look over those shelves of heatsinks at your local computer shop. Given the OEM relationship that many companies enjoy, I would expect the NP60CS to be pretty economical, and offer a very good price/performance ratio.