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Cooler Master GeminII M4 review

This CPU chiller is good for stock clockers only

Our Verdict

For

  • Compact design
  • Direct contact heatpipes
  • Quiet

Against

  • Not one for the overclockers

The Cooler Master GeminII M4 uses the direct contact method of shifting heat awat from the CPU. Instead of the heatpipes passing through the contact base, in this method they are flattened and become an integral part of the bottom of the contact plate, directly touching the heat shield on the top of the CPU.

To get to its amazingly low height profile (just 59mm tall) the cooler uses four standard 6mm U-shaped heatpipes but turns them on their sides to allow for a more compact design. And the newly-designed XtraFlow 120mm fan sitting on the top of the cooler is just a mere 15mm thick.

As you can see from the figures, the GeminII M4 isn't a cooler designed to be used in heavy overclocking situations and to be fair to Cooler Master it doesn't make claims that it is.

A 2600K maxes out at around 98ºC and while the GeminiII M4 has no problems keeping the CPU cool even under load at stock speeds, it's a different story when the core is overclocked and under load. The M4 struggles to hit 85ºC, which is a tad high for continuous use.

TechRadar Labs

tech labs

CPU standard clock (2600K @3.4GHz)

CPU Idle load performance
Degrees Centigrade: Lower is better

Be Quiet Dark Rock Advanced C1: 24
Cooler Master GeminII M4: 25
Cooler Master Hyper TX3 EVO: 22
Gelid GX-7: 22
Enermax ETS-T40-TA: 21

CPU full load performance
Degrees Centigrade: Lower is better

Be Quiet Dark Rock Advanced C1: 52
Cooler Master GeminII M4: 61
Cooler Master Hyper TX3 EVO: 63
Gelid GX-7: 55
Enermax ETS-T40-TA: 50

CPU Overclocked (2600K @ 4.6GHz)

CPU Idle load performance
Degrees Centigrade: Lower is better

Be Quiet Dark Rock Advanced C1: 25
Cooler Master GeminII M4: 26
Cooler Master Hyper TX3 EVO: 24
Gelid GX-7: 22
Enermax ETS-T40-TA: 22

CPU full load performance
Degrees Centigrade: Lower is better

Be Quiet Dark Rock Advanced C1: 72
Cooler Master GeminII M4: 83
Cooler Master Hyper TX3 EVO: 85
Gelid GX-7: 78
Enermax ETS-T40-TA: 70

The compact design though is a godsend for people who want to put standard, high voltage, processors in the confines of a smaller case. As can be seen from our test results, the GeminII M4 works just fine. It's also pretty quiet in operation too.

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Tech Specs

Product TypeCooling Fan/Heatsink
Number of Fans1
Compatible Processor SocketSocket B LGA-1366, Socket H LGA-1156, Socket H2 LGA-1155, Socket T LGA-775, Socket FM1, Socket AM3 PGA-941, Socket AM2+ PGA-940, Socket AM2 PGA-940, Socket AM3+
Fan Speed1 x 1600 rpm
Brand NameCooler Master
Application/UsageProcessor
Fan Diameter1 x 120 mm
Heatsink Height44 mm
Heatsink Width120 mm
Heatsink Depth118 mm
Height59 mm
Width137 mm
Depth122 mm
Fan Bearing TypeLong Life Sleeve Bearing
Fins/Pins StyleHeat Pipe
Compatibility

Intel Processors:

  • Core i7 Extreme
  • Core i7
  • Core i5
  • Core i3
  • Core 2 Extreme
  • Core 2 Quad
  • Core 2 Duo
  • Pentium
  • Celeron

AMD Processors:

  • Phenom II X4
  • Phenom II X3
  • Phenom II X2
  • Phenom X4
  • Phenom X3
  • Athlon II X4
  • Athlon II X3
  • Athlon II X2
  • Athlon X2
  • Athlon
  • Sempron
Connectors4-pin
ManufacturerCooler Master Co., Ltd
Product ModelM4
Product NameGeminII M4 Cooling Fan/Heatsink
Product LineGeminII
Manufacturer Part NumberRR-GMM4-16PK-R1
Manufacturer Website Addresshttp://www.coolermaster.com
Marketing Information

Engineered to quickly dissipate heat from a CPU, the GeminII M4 is built with direct contact heat pipes that minimize CPU contact gaps and provide excellent heat conduction. The GeminII M4 is the ultimate answer to space-constrained setups such as mini-ITX, HTPC, and any small-sized desktop PC.

MaterialAluminium Fin
Limited Warranty2 Year
Weight (Approximate)289 g