Cooler Master GeminII M4 Low Profile Heatsink

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Cooler Master GeminII M4 Low Profile Heatsink

July 15, 2012 by Lawrence Lee

Cooler Master GeminII M4
CPU Cooler
Cooler Master
Street Price

Back in 2009, we did a couple of roundups of smallish CPU heatsinks which consisted of some petite stock unit replacements and performance coolers of varying sizes. The 86 mm tall Cooler Master GeminII S was one of the reviewed models, but today it wouldn't even qualify as a compact heatsink. The proliferation of mini-ITX motherboards and cases over the past two years has fueled the need for smaller coolers, closer to 60 mm or less in height.

The Cooler Master GeminII M4.

The latest GeminII, the M4, is more contemporary with today's standards. It bears more than a passing resemblance to one of the best small heatsinks on the market today, the Scythe Big Shuriken 2. Its dimensions are almost identical, though the M4 is substantially lighter, and its slim 120 mm fan is a bit thicker. On paper, the other big difference is the use of four direct-touch heatpipes; the Big Shuriken 2 has five heatpipes and a copper base plate.

Package contents.

The box is no larger than it needs to be. The heatsink comes packed in a protective foam layer along with the accessories. The mounting hardware includes a backplate despite the M4's low mass, and LGA2011 clips are provided right out of the box. There's also an instruction sheet, a tube of thermal compound and a nut-driver.

Cooler Master GeminII M4: Key Features
(from the product web page)
Feature & Brief
Our Comment
Super low profile cooler (59mm / 2.3in height) with 4 direct contact heat pipes. For a smaller heatsink, four heatpipes seems like a lot but they're quite short.
A base engineered to minimize CPU contact gaps provides excellent heat conduction. Okay.
Suitable for limited space applications (e.g. HTPC or slim systems). That's why we're here.
Newly developed thin fan profile delivers uncompromised cooling performance in a compact package. A thinner than normal fan is utilized to keep the size down.
Unique heat pipe layout combines two very effective cooling methods to increase cooling efficiency while maintaining a low profile heat sink. Direct-touch heatpipes contact the processor heatspreader directly, making a separate base plate unnecessary.

Cooler Master GeminII M4: Specifications
(from the product web page)
Model RR-GMM4-16PK-R2
CPU Socket Intel Socket:
LGA 2011 / 1366 / 1156 / 1155 / 775 *

AMD Socket:
FM1 / AM3+ / AM3 / AM2+ / AM2

CPU Support Intel:
Core™ i7 Extreme / Core™ i7 / Core™ i5 / Core™ i3 / Core™2 Extreme / Core™2 Quad / Core™2 Duo / Pentium / Celeron

FX-Series / A-Series / 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™

Dimension 137 x 122 x 59mm (5.4 x 4.8 x 2.3 in)
Heat Sink Dimensions 120 x 118 x 44 mm (4.7 x 4.6 x 1.7 in)
Heat Sink Material 4 Direct Contact Heat Pipes / Aluminum Fins
Heatsink Weight 210g (0.46 lb)
Heat Pipes Dimensions ø6mm
Fan Dimension 120 x 120 x 15 mm (4.7 x 4.7 x 0.6 in)
Fan Speed 500 – 1,600 RPM (PWM) ± 10%
Fan Airflow 17.4 – 58.4 CFM ± 10%
Far Air Pressure 0.18 – 1.76mm H2O ± 10%
Fan Life Expectancy 40,000hrs
Fan Noise Level (dB-A) 8 - 30 dBA
Bearing Type Long Life Sleeve
Connector 4-Pin
Fan Rated Voltage 12 VDC
Fan Rated Current 0.2A
Power Consumption 2.4W
Fan Weight 79g (0.17 lb)
Warranty 2 years
UPC Code 884102013140
Notice * Supplied accessories may differ by country or area. Please check with your local distributor for further details.

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