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Cooler Master GeminII S Heatsink Review
Cooler Master GeminII S Heatsink Review
  76%   
Abstract: Cooler master's GeminII S heatsink stands just 88mm tall and ships with a 120mm fan mounted to its frame. An extra set of brackets allow that fan to be replaced with two 92mm or 80mm fans.

 Manufacturer  Category  Published  Author 
CoolerMaster   Cooling / Heatsinks   Jul 21, 2008   Max Page  

Home > Reviews > Page: Intel LGA775 Heatsink Temperature Comparisons

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
Coolermaster Hyper Z600 18.0 11.6 47.7
Zerotherm FZ120 high 18.2 11.4 47.6
3Rsystem Iceage 120 high 18.2 12.1 47.9
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
NH-C12P 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
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
Coolink Silentator high 23.5 16.4 41.2
Scythe Mine Rev. B 23.6 15.0 36.8
Cooljag Falcon 92-Cu high 23.6 14.8 52.8
Akasa AK-920 high 24.3 14.1 52.9
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
Akasa AK-922 (EVObue) high 25.5 15.4 60.3
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
Scythe Andy Samuri Master SCASM-1000 26.7 14.2 38.4
Noctua NH-U9B high 27.1 17.2 41.9
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
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
Coolermaster GeminII S low 31.8 19.0 36.0
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
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 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
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.

the heat output from 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, the Coolermaster GeminII S heatsink maintains a temperature of 21.3°C over ambient (49.6dBA noise). Coolermaster's GeminII S was then tested with a 85W heat load at the same fan speed, resulting in a low 13.4°C rise over ambient temperature.

For the next round of testing the speed of the 120mm PWM fan was reduced to 1000RPM. Under these conditions the Coolermaster GeminII S heatsink held steady with temperatures of 31.8°C and 19.0°C over ambient for the 150W and 85W heat load tests respectively. Noise levels remained constant at 36.0dBA.

Curiously, the thermal results for the Coolermaster GeminII S heatsink are quite close to the similarly sized Noctua NH-C12P heatsink which also shares some design attributes. The Noctua model operates about 9 dBA quieter at full speed, and at lower fan speeds the performance of each heatsink diverges however.

Overall the Coolermaster GeminII S is a very good heatsink for both Intel and AMD platforms when running at full fan speed, particularly if we consider its compact height. There are of course a couple dozen other heatsinks to pick from if you demand lower temperatures, or a little less noise. Most of those options are "tower heatsinks" in the +145mm high range however. When running in its quietest fan mode the GeminII S heatsink offers us average performance. Bottom line, the Coolermaster GeminII S is a good thermal option hampered by cumbersome mounting system.

Related Articles:

The Top 5 best heatsinks for low noise and low temperature are ranked here. For more reviews on the latest heatsinks and cooling solutions, rely on FrostyTech's inventory of 400+ heatsink reviews. Here are a few other articles that you might enjoy as well.

- Apack Zerotherm FZ120 Heatsink Review
- Noctua NH-C12P Heatsink Review
- OCZ Vendetta 2 Exposed Heatpipe Base Heatsink Review
- Coolermaster Hyper Z600 Passive Heatsink Review
- Intel FCLGA4-S Core 2 Extreme Reference Heatsink Review
- Coolermaster Aquagate Mini R80 Watercooling CPU Heatsink Review
- Xigmatek Achilles S1284 Exposed Heatpipe Base Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Cooler Master GeminII S Heatsink Review
 2:  360° View - Coolermaster GeminII S Heatsink
 3:  Acoustic Sample and Heatsink Sound Levels
 4:  AMD K8 Heatsink Temperature Comparisons
 5: — Intel LGA775 Heatsink Temperature Comparisons

List all CoolerMaster heat sinks that Frostytech tested?

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