FrostyTech Mk.II Synthetic Thermal Heatsink Test Results Intel Pentium D / Extreme Edition & Quad Core class heatsinks tested at 150W Intel Core 2 Duo / Pentium 4 / Celeron class heatsinks tested at 85W Results based on readings from a 30x30mm copper interface die with 150W and 85W heat loads applied on the LGA775 version of the Mk.II Test Platform. Temperature results listed for each heatsink were calculated by determining the rise over ambient temperatures at time of test. Information on Frostytech's test methodology is available here. Socket 775 compatible CPU heatsinks
manufacturer:	model no.:	fan speed:	150w thermal test* (°c)	85w thermal test (°c)	noise level (dba)
Sunbeamtech	Core-Contact Freezer	high	16.1	10.0	51.3
Xigmatek	HDT-S1283	high	16.8	10.7	50.7
Thermalright	Ultra 120		17.8	10.6	53.7
Xigmatek	DK-S1283	high	17.9	11.0	49.6
Ibuypower	IBP-Z001	high	18.0	11.6	61.7
Coolermaster	Hyper Z600		18.0	11.6	47.7
Xigmatek	HDT-S1284EE	high	18.1	9.4	44.2
Zerotherm	FZ120	high	18.2	11.4	47.6
3Rsystem	Iceage 120	high	18.2	12.1	47.9
Vantec	VAF-1225 Aeroflow FX 120	high	18.3	11.8	54.2
Coolermaster	V8	high	18.4	11.2	52.6
Thermalright	Ultra 120 Extreme		18.4	11.4	44.5
Xigmatek	HDT-SD964	high	18.8	11.6	57.2
SilenX	iXtrema IXC-120HA2	high	18.9	11.2	52.9
Coolermaster	Hyper 212		19.0	11.8	45.9
Apack	Zerotherm BTF92 OC Ed	high	19.0	11.2	53.6
Zalman	CNPS9700 LED	high	19.0	10.4	56.5
Xigmatek	HDT-S983	high	19.5	11.8	52.7
Scythe	Mugen		19.5	11.4	46.0
Xigmatek	S1284 Achilles	high	19.6	11.6	42.7
Tuniq	Tower 120	high	19.6	12.2	51.6
Thermalright	Ultra-90	high	19.6	13.0	56.2
Apack	Zerotherm Nirvana 120	high	19.8	12.3	49.2
Enzotech	Ultra-X	high	20.0	8.5	59.1
Zalman	CNPS9700NT	high	20.3	12.4	52.2
Scythe	Infinity SCINF-1000		20.3	12.6	37.8
OCZ	Vendetta 2	high	20.5	12.5	41.9
OCZ	Gladiator Max	high	20.7	12.6	42.9
EKL	GroB Clock'ner		20.8	13.2	40.6
EKL	GroB Clock'ner Blue Ed.	high	21.0	12.9	42.4
Vantec	VAF-9225 Aeroflow FX92	high	21.2	14.0	57.9
Noctua	NH-C12P	high	21.2	13.1	40.4
Coolermaster	GeminII S	high	21.3	13.4	49.6
OCZ	Vendetta	high	21.3	13.5	52.8
Noctua	NH-U12P	high	21.3	13.4	40.7
Apack	Zerotherm BTF90		21.8	12.7	52.1
Xigmatek	HDT-S963	high	21.9	13.7	50.2
Akasa	AK-965	high	22.2	13.8	48.1
Apack	Zerotherm BTF80		22.8	13.9	51.9
Thermaltake	MaxOrb	high	22.9	13.1	57.4
Zalman	CNPS8700 LED	high	23.2	14.1	48.1
Cooljag	Falcon 92-AL	high	23.2	14.2	52.1
Rosewill	RCX-Z3	high	23.3	14.0	58.6
Xigmatek	DK-S1283	low	23.4	15.3	37.6
Coolink	Silentator	high	23.5	16.4	41.2
Nexus	HOC-9000	high	23.6	14.6	43.0
Scythe	Mine Rev. B		23.6	15.0	36.8
Cooljag	Falcon 92-Cu	high	23.6	14.8	52.8
Thermaltake	MaxOrb EX	high	24.0	13.9	56.5
nPowertek	NPH-775-115HC		24.2	15.3	55.0
Akasa	AK-920	high	24.3	14.1	52.9
Thermaltake	V1	high	24.4	12.3	59.6
Intel	FCLGA4-S Reference (P mode)	high	24.5	15.2	61.1
Scythe	Zipang		24.7	15.2	33.1
Glacialtech	Igloo 5750 PWM	high	24.9	14.6	52.3
Asus	Arctic Square	high	24.9	14.9	44.9
AMA	Serac 770		25.4	15.7	42.1
Akasa	AK-922 (EVObue)	high	25.5	15.4	60.3
Asus	Lionsquare	high	25.7	15.3	44.7
Coolermaster	Aquagate Mini R80	high	25.7	16.2	59.2
Asus	Silent Square EVO	high	25.8	15.6	42.8
Glacialtech	Igloo 5610 PWM	high	25.9	15.9	59.5
Thermalright	SI-128SE		26.5	15.2	44.5
Thermaltake	DuOrb		26.7	16.1	49.5
Scythe	Andy Samuri Master SCASM-1000		26.7	14.2	38.4
Titan	Cool Idol TTC-NK75TZ	high	26.9	15.1	56.3
Gelid	Silent Spirit	high	27.0	17.1	48.5
Zalman	CNPS9300AT	high	27.1	18.2	55.5
Noctua	NH-U9B	high	27.1	17.2	41.9
Asus	Triton 79 Amazing		27.7	17.0	44.3
ASUS	Triton 77	high	27.7	17.6	41.2
Auras	SLC-747	high	27.9	25.7	52.2
Auras	LPT-700		28.3	16.9	52.2
Thermalfly	F1-IACSHA	high	29.0	18.3	60.4
Evercool	Transformer 6	high	29.2	14.6	51.6
nPowertek	TTIC NPH1000		29.3	16.8	47.5
Glacialtech	Igloo 5710 Silent		29.4	18.0	43.4
Thermalfly	I75DUB	high	29.5	16.8	68.5
Zalman	CNPS9500 AT		29.6	17.3	53.3
Glacialtech	Igloo 5750 Silent		29.8	18.5	35.5
Coolermaster	Hyper TX2		29.9	18.8	53.7
Alpha Novatech	PRE9060M92P	high	29.9	18.5	51.5
Scythe	Kama Cross		30.0	18.8	40.0
Akasa	AK-961		30.0	18.7	60.7
Auras	LPT-709		30.1	18.6	43.9
Rosewill	RCX-Z2-EX	high	30.1	18.7	45.9
nPowertek	NPH-775-1		30.1	18.8	50.1
Glacialtech	Igloo 5610 Silent		30.4	17.1	44.7
Sunon	Waturbo		30.6	18.3	57.5
Auras	CTC-868 (closed)		31.0	18.6	48.7
Akasa	Revo (horizontal)	high	31.0	20.3	44.5
Scythe	Shuriken	high	31.4	18.8	38.2
Apack	CF800	high	31.4	20.7	48.4
Thermaltake	Jungle512	high	31.6	20.4	60.8
Coolage	Frozen Orb F0-Z924AL	high	32.0	19.9	48.9
Xigmatek	AIO-S80DP	high	32.4	21.4	55.0
Scythe	Katana II		32.5	18.6	37.9
Rosewill	RCX-Z2		32.6	19.3	59.9
Zalman	CNPS7700-Cu	high	32.9	19.7	50.7
Apack	CF900	high	32.9	20.3	48.3
Evercool	PT02-9232CP		33.3	19.9	63.3
Zalman	CNPS7700-Cu LED	high	33.5	20.6	49.8
Scythe	Ninja Mini		33.7	19.9	41.7
Thermalright	MST-977SLE		33.8	20.0	46.5
Intel	Stock Pentium D	high	33.8	20.7	47.5
Scythe	Orochi SCORC-1000		34.0	20.8	27.8
Thermolab	TLI-S Micro Silencer		34.7	19.2	52.0
nPowerTek	SF775-2	high	34.7	21.1	64.6
Asus	Silent Knight 2	high	34.9	21.4	46.2
Akasa	AK-960E		36.1	21.4	56.3
Gigabyte	Volar GH-PSV21-FB	high	36.3	22.1	56.1
Auras	SMF-660		36.4	23.0	43.4
Zalman	CNPS7500-Cu LED	high	36.4	22.9	50.9
Thermalfly	I75DUH		37.8	22.8	48.7
Akasa	AK-975CU	high	38.4	23.0	47.7
Cooljag	OAK-H	high	38.5	22.9	55.7
Cooljag	OAK-H2	high	38.6	24.1	55.6
LS Cable	SHS-T700		38.7	22.8	48.5
nPowertek	NPH-775-140HC	high	40.2	24.8	56.7
Arctic Cooling	Alpine 7 Pro	high	40.5	23.8	44.1
Intel	Stock Core 2 Duo		49.2	29.0	36.7
Thermolab	TLI-U Nano Silencer		50.4	28.8	48.3
Glacialtech	Igloo 5062 Cu Light		50.6	29.7	45.2
Glacialtech	Igloo 5063 Light E		56.5	32.1	51.5
Glacialtech	Igloo 5063 Cu Silent E		57.3	34.4	41.0
Glacialtech	Igloo 5057 E		58.5	36.1	53.4
Asus	Triton 75		58.6	16.1	49.6
Spire	Fourier IV SP607B3-C		63.6	18.7	60.2
Asus	Triton 85	high	71.5+	16.2	41.1
Glacialtech	Igloo 5058 Light E		73.8	39.9	48.5
			150w thermal test (°c)	85w thermal test (°c)	noise level (dba)
*heatsinks are ranked according to the 150w 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.

Heat output from socket 775 Intel processors varies, so Frostytech tests with two thermal values that represent the upper limits of existing CPU families. With a 150W heat load applied by the Intel LGA775 version of FrostyTech's synthetic thermal test platform first, the Xigmatek Dark Knight S1283 heatsink maintains a temperature of 17.9°C over ambient (49.6dBA noise) at full fan speed. This is an excellent result for an Intel heatsink, and thrusts the Xigmatek Dark Knight S1283 heatsink into the Top 5 Chart!

For the next test the 120mm fan speed was reduced from 2200RPM to 1000RPM, decreasing noise levels to a very quiet 37.6dBA. In this scenario the Xigmatek Dark Knight S1283 heatsink held steady at 23.4°C over ambient - better than most Intel heatsinks are able to achieve at full fan speed, but not quite as low as the un-plated HDT-S1283 model.

Xigmatek's Dark Knight S1283 heatsink was then tested on the Frostytech Mrk.II synthetic thermal test platform with an 85W heat load; akin to a Core 2 Duo processor. In this test the Dark Knight S1283 maintained a nice 11.0°C rise over ambient temperature at default fan speed, and 15.3°C at its reduced fan speed.

In comparison to the originally Xigmatek HDT-S1283 model, the Dark Knight S1283 heatsink is nearly identical but a little less able at slower fan speeds. The dark nickel plating adds another layer for heat to cross, so it can slightly impede cooling. Still, Xigmatek's Dark Knight S1283 heatsink operates very well at full fan speed on both AMD and Intel test platforms, and would be a worthy heatsink for high performance cooling.

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