The fan on the Bitspower NP80D is moderatly noisy, but by no means a really ear-sore. Perhaps BitsPower's choice to stay with only a 20mm thick fan is a better move than we had previously thought? If they had gone with the 60mm Delta - a fan easily available just about anywhere if you want to upgrade your heatsink - they would have been a lot noisier. While this makes no difference to some of you, we here at FrostyTech have to wear headphones when we test heatsinks - else we might be deaf by now!

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	Dynatron	DY1206BH-638	22.5	37.3	46.3		51.5	67.4	none	1	high	med
3	Vantec	CCK-6027D	27.4	45.4	49.6		64.9	73.4	none	1	med	med
4	OCZ	Dominator	26.5	37.7	50.9		52.4	74.2	none	1	loud	med
5	Bitspower	NP80D	21.0	46.9	51.7		68.6	74.6	none	1	med	easy
6	Swiftech	MCX370-0A	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	Titan	TTC-D5TB2A	22.2	45.5	49.4		67.4	77.1	none	1	low	easy
9	Vantec	CCK-6035D-Retail	26.5	44.2	52.8		63.2	77.9	none	1	loud	med
10	Thermaltake	Volcano 6cu+	26.5	40.3	55.3		58.6	84.4	carbon	1	loud	med
11	BitsPower	NP80D	20.6	46.6	58.3		72.4	94.9	none	1	med	easy
				50W	50W		100W	100W

Compared to its smaller brother, the NP80D comes in quite respectably among the list of reference coolers. Could it be that the skive construction is more efficient than copper and larger fans combined? Before we move on to the more accurate rise above ambient temperature results take a look at the results of the NP60D. Size does matter :-)