FrostyTech.com Mk.II Synthetic Thermal Heatsink Test Results Results based on readings from a 38x38mm copper interface die with 125W heat load on the Mk.II Test Platform. Thermal Test values for each heatsink were calculated by determining the rise over ambient temperature at time of test. Information on Frostytech's test methodology is available here. Socket 939/940/754 compatible CPU heatsinks
manufacturer:	model no.:	*fan speed:	125w thermal test (°c)	noise level (dba)
AVC	Z7U7414001	high	17.0	63.0
Noctua	NH-U12		17.5	45.4
Gigabyte	G-Power Pro	high	18.6	71.9
Noctua	NH-U9		18.8	58.4
Coolermaster	Hyper6	high	20.5	54.7
Thermaltake	Venus 12	high	21.7	68.1
ASUS	Starice	high	22.8	67.4
Zalman	CNPS9500 AM2	high	23.0	53.2
Arctic Cooling	Freezer 64 Pro		23.2	50.9
Coolermaster	Aquagate Mini	high	23.2	59.2
Thermaltake	Polo 735	high	23.4	68.0
Cooljag	SFO-H	high	23.6	60.6
Alpha	PAL-8150		23.7	58.9
Zalman	CNPS9500LED (clip parallel)	high	23.8	50.3
AVC	Z7U3301001 (stock 939)	high	24.6	59.9
Gigabyte	3D Cooler-Ultra	high	24.8	63.0
Scythe	Shogun	high	26.0	45.9
EKL	V8	high	26.3	57.5
Gigabyte	3D Rocket-Pro	high	26.9	56.7
Gigabyte	3D Cooler-Pro	high	27.0	62.5
Spire	SP601B3		28.3	48.9
Ajigo	MF064-074	high	28.8	60.3
Gigabyte	3D-Rocket		28.9	50.7
Zalman	CNPS9500 AM2	low	29.2	36.0
Vantec	Mach1	high	29.2	56.9
AVC	Z7U7414001	low	29.6	48.1
CoolJag	SFO-D(18SC)		29.6	64.0
Arctic Cooling	Alpine 64		30.5	43.9
Zalman	CNPS7000A-Cu	high	30.3	45.2
Dynatron	SK-V24		30.3	56.4
Zalman	CNPS7000-Cu	high	31.0	45.2
Coolermaster	Hyper48		31.7	43.6
Scythe	Kama SCKK1000		31.9	47.5
Scythe	Samurai SCSM1000	high	32.1	51.6
Zalman	CNPS7000B-CU	high	32.3	44.9
Thermaltake	Silentboost K8		32.3	49.7
Jetart	JAX801		33.2	53.5
Dynatron	A22		34.5	44.5
nPowertek	NPH K8-1		34.6	52.2
Ajigo	MF043-044 (stock 754)		35.0	45.4
Verax	Quattro 1		36.9	30.9
Arctic Cooling	Silencer 64 Ultra TC		37.5	55.5
Gigabyte	NeonCooler 8-BL		37.7	42.0
Titan	TTC-K8ATB/825/SC		38.7	63.1
Evercool	K802-715		42.1	51.5
Spire	SP741B3		43.2	45.6
Evercool	Magic Cooler		46.6	55.5
ASUS	Starice	low	92.4+	34.4
			125w thermal test (°c)	noise level (dba)
*heatsinks are ranked according to the 125w thermal test results column (rise over ambient temp.). low temperatures with low noise levels are considered best. for reference heatsinks with variable-speed fans, only the high speed (12v) fan test result is included in the comparison sheet; more detailed results reside in each specific heatsink review.

The FrostyTech Mk.II thermal test platform stresses both socket 939 and socket AM2 class K8 heatsinks with 125W of heat, and once equilibrium is reached we note the rise in temperature (2nd column from the right) above that of the ambient temp. So in effect what we're doing is leveling the playing field and allowing comparisons between each heatsink in this reference list. The far right column identifies the noise level of each specific heatsink, and naturally the quieter the better!

With a 125W heat load applied, the AVC Z7U7414001 socket AM2 reference heatsink yields a very nice rise above ambient temperature at the slowest fan speed of 29.6°C, with just 48.1 dBA noise. When the Z7U7414001's fan speed is increased from 3800RPM to 5400RPM, the socket AM2 heatsink posts much cooler temperatures.... the best we've tested thus far in fact.

The full speed test produces about 63.0 dBA noise, but the rise above ambient temperature result drops to a record breaking 17.0°C rise above ambient temperature!

At its highest fan speed of 5400RPM, the AVC Z7U7414001 heatsink is among the best solutions for either the socket AM2 or socket 939 AMD Athlon64 platform. When running with a more conservative fan speed, the AVC Z7U7414001 heatsink certainly falls within the crowd of well performing mainstream coolers. It compares well against the only other purpose built socket AM2 we've thus tested, the Zalman CNPS9500 AM2, though each has its own specific qualities. Considering these results, it is clear that AVC has provided socket 754/939/940 and AM2 Athlon64 users with very capable heatsink.

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