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Cooler Master GeminII M4 - CPU Cooler with 4 Direct Contact Heat Pipes (RR-GMM4-16PK-R2)

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374 ratings

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Product Dimensions	5.4 x 4.8 x 2.3 inches; 10.24 Ounces
Brand	Cooler Master
Power Connector Type	4-Pin
Wattage	2.4 watts
Cooling Method	Thermal
Compatible Devices	Desktop
Noise Level	30 dB
Material	Aluminum

About this item

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Speed: 500 1600rpm (PWM) 10 percent
Bearing Type: Long Life Sleeve Bearing
Life Expectancy: 40,000 hours
Noise Level: 8 30 dBA
Airflow: 17.4 58.4 CFM 10 percent
Connector: 4 Pin
Super low profile cooler (59mm/2.3 Inch height) with 4 direct contact heatpipes.

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From the manufacturer

Since our founding in 1992 as a thermal pioneer responsible for the first ever heatpipe heatsink, through our evolution into a manufacturer of cutting-edge cases and peripherals, to our recent groundbreaking switch to the modular format, Cooler Master has consistently rewarded its customers and fans with the utmost in innovation, choice, and control.

GeminII M4

Four Heatpipe Air Cooler

Engineered to quickly dissipate heat from a CPU, the GeminII M4 is built with direct contact heatpipes 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.

Super Low Profile
4 Direct Contact Heatpipes
HTPC And Slim System Compatibilty
New super slim fan


	Hyper-T2	Hyper 212 EVO	Hyper D92	Hyper T4	Vortex Plus	GeminII M4
CPU Socket	Intel: LGA 1151, 1150, 1155, 1156, 775 AMD: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1	Intel: LGA 2011, 1366, 1151, 1150, 1155, 1156, AMD: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1	Intel: LGA 2011-3, 2011, 1366, 1156, 1155, 1151, 1150, 775 AMD: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1	Intel: LGA 2011, 1366, 1151, 1150, 1155, 1156, 775 AMD: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1	Intel Socket: LGA 1366, 1151, 1150, 1155, 1156, 775 * AMD Socket: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1, 940, 939, 754	Intel Socket: LGA 1366, 1151, 1150, 1155, 1156, 775 * AMD Socket: FM2+, FM2, FM1, AM3+, AM3, AM2+, AM2, AM1
Dimension	93 x 80 x 140 mm	120 x 79.7 x 158.5 mm	128.9 x 96.6 x 146.4 mm	131.6 x 72.5 x 152.3 mm	116 x 100 x 84 mm	137 x 122 x 59mm
Heat Sink Dimension	90 x 51 x 140 mm	116 x 51 x 159 mm	124.5 x 84 x 146.4 mm	128 x 44 x 152.3 mm	116 x 100 x 58.5 mm	120x 118 x 44 mm
Heat Sink Material	Dual Loop, Continuous Direct Contact Heatpipes	4 Direct Contact Heat Pipes / Aluminum Fins	Accelerated Cooling System - 4 Direct Contact Heatpipes - High Density Fins - 2 Offset 92mm Push-Pull Fans	4 Direct Contact Heatpipes / Aluminum Fins	Aluminum fins + 4 heatpipes	4 Direct Contact Heat Pipes / Aluminum Fins
Fan Dimension	92 x 92 x 25 mm	120 x 120 x 25 mm	92 x 92 x 25 mm	120 x 120 x 25 mm	92 x 92 x 25 mm	120 x 120 x 15 mm
Fan Speed	800 - 2800 RPM (PWM) ± 10%	600 – 2,000 RPM (PWM) ± 10%	800 - 2800 RPM +/- 10%	600~1800 RPM (PWM) ± 10%	800 - 2800 RPM (PWM)	500 - 1,600 RPM (PWM) ± 10%
Fan Airflow	15.7 – 54.8 CFM ± 10%	24.9 – 82.9 CFM ± 10%	15.7 - 54.8 CFM +/- 10%	24~70 CFM ± 10%	15.7 - 54.8 CFM	17.4 - 58.4 CFM ± 10%
Fan Life Expectancy	40,000 hours	40,000 hours	40,000 hours	40,000 hours	40,000 hours	40,000 hours
Fan Noise Level (dB-A)	17 - 35 dBA	9 - 36 dBA	18 - 33 dBA	15.1~31.6 dBA	17 - 35 dBA	8 - 30 dBA
Power Consumption	3.12W	2.64W	2.88W (max)	2.64W	3.12W	2.4W

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Customer Rating	(374)	(1628)	(2375)	(1780)	(210)	(2978)
Price	$21.00	$59.95	$44.95	$44.95	$39.99	$11.99
Sold By	AVG PC	Noctua Cooling Solutions	Noctua Cooling Solutions	Noctua Cooling Solutions	ID-COOLING	ARCTIC Inc
Item Dimensions	5.4 x 4.8 x 2.3 inches	3.74 x 2 x 3.74 inches	3.74 x 1.46 x 3.74 inches	3.62 x 4.49 x 1.46 inches	—	3.74 x 3.74 x 3.03 inches
Item Weight	0.64 lbs	0.90 lbs	0.76 lbs	1.03 lbs	1.00 lbs	0.60 lbs

Compare with similar items

Product description

Size:GeminII M4 | Style:Top Down

GeminII M4 is a super low profile CPU cooler (59mm/2. 3 Inch height) designed for a system with limited space, such as Mini ITX, HTPC, or any small desktop. With its 4 direct Contact heat pipes and unique Heat pipe layout, GeminII M4 not only keeps compact size, but provides amazing cooling performance.

Product information

Size:GeminII M4 | Style:Top Down

Technical Details

Collapse all

Summary

Standing screen display size

‎2.3 Inches

Other Technical Details

Brand

‎Cooler Master

Item model number

‎RR-GMM4-16PK-R2

Item Weight

‎10.2 ounces

Product Dimensions

‎5.4 x 4.8 x 2.3 inches

Item Dimensions LxWxH

‎5.4 x 4.8 x 2.3 inches

Color

‎GeminII M4

Manufacturer

‎Coolermaster

ASIN

‎B0080ATR2Y

Is Discontinued By Manufacturer

‎No

Date First Available

‎June 8, 2012

Additional Information

Customer Reviews

374 ratings

4.3 out of 5 stars

Best Sellers Rank

#991 in Computer CPU Cooling Fans

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Product Warranty: For warranty information about this product, please click here

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Product guides and documents

User Manual (PDF)

Customer Questions & Answers

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Customer reviews

5 star		69%
4 star		10%
3 star		9%
2 star		5%
1 star		8%

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Top reviews from the United States

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Josh F.

REVIEW FOR THE GEMENII M4

Reviewed in the United States on August 10, 2017

Size: GeminII M4Style: Top DownVerified Purchase

First off, I'm not sure why Amazon has combined all the reviews for cooler master heatsinks into one group. That being said for the M4, it is a significant upgrade from the stock heatsink and much quieter. Idle in the 20s and gaming around low 50s. Not bad, that's even with the thermal paste they provided. Instructions were minimal and I mostly winged it with the help of YouTube.

My biggest issue would have to be that it's so fat that it tends to block slots (ram, pci, or other slots) due to it's large width. It becomes an issue for smaller mobos like my own and quite honestly defeats the purpose of a low profile heatsink.

Luckily, I made it fit (by about 1cm) and only because my ram is average height.

In the end it's kinda a counter intuitive design but luckily it worked out for me and make sure you check to see if you have enough room.

Here's a picture and forgive my lack of cable management, I made a horrible case decision (first time PC builder mistake)

2 people found this helpful

Helpful

B. Hochstrasser

Perfect solution for a noisy stock cooler!

Reviewed in the United States on October 14, 2015

Size: GeminII M4Style: Top DownVerified Purchase

I needed a better cooling solution for my HTPC as using the stock cooler and PSU was too loud, even behind the closed glass door of a cabinet. I liked what I saw with the Cooler Master GeminII M4, but was a little concerned that it would be too big for my mini-ITX motherboard. I also knew that I needed to replace the stock PSU due to a cramp case, so I went with the Mini-Box picoPSU-160-XT Mini-Box picoPSU-160-XT High Power 24 Pin Mini-ITX Power Supply , also available here on Amazon. Well the results are spectacular! There is plenty of clearance between the bottom of the heat sink and the DDR3 memory, and I can just barely fit my TV tuner card in the PCI-express slot. NOTE: Due to how the copper pipes extend out from the sides, the cooler only fit in one orientation and still allowed me to install the TV tuner card. I recommend you just take your time, and carefully "dry" mount it until you are sure before applying the grease and tightening it down. The unit now runs silent and stays 20 degrees (C) cooler than it did with the stock cooler when under heavy load. My CPU is an Intel Core i3 540 (3.06G), Motherboard is a Zotac H55ITX-A-E LGA1156, Case is a Rosewill Mini ITX RS-MI-01.

2 people found this helpful

Helpful

Matthew Eater

but once you have them on they are fairly sturdy. The cooler is also tall enough to clear ...

Reviewed in the United States on December 5, 2017

Size: GeminII M4Style: Top DownVerified Purchase

I bought this cooler as a replacement for a Zotac copper tower cooler that I had jury rigged into my travel computer because I was worried about the weight of the Zotac cooler damaging the board. This cooler weighs less than half what the other one did, and it has the added benefit of directing airflow onto the motherboard (a BioStar A960D+ in desperate need of VRM cooling). The wire brackets that hold the fan to the cooler can be a bit of a pain to wrestle with, but once you have them on they are fairly sturdy. The cooler is also tall enough to clear the RAM and (custom) VRM heatsinks, while still being about half the height of a traditional cooler like the Hyper 212 Evo in my main rig. Performance-wise, I would say this is an excellent upgrade to a stock cooler if you want to overclock a lower TDP chip. I have mine on an FX6300 (on an iffy board, as already mentioned) so I'm a bit leery of trying to push it, but something like an 8400k should have decent headroom.

Helpful

Tom

Difficult mounting system, requires board out or access to back of board. Works well otherwise.

Reviewed in the United States on November 30, 2019

Size: GeminII M4Style: Top DownVerified Purchase

It cools about 5c lower than stock. Low profile and good fit. Overhangs two of the 4 ram slots. Which means if you change ram or have an issue, you'll have to remove the cooler.
I'm surprised a well known name brand wasn't much better than the cheap ones. The install, even with directions, was annoying. The bracket had to be trimmed here and there to fit. Being a metal bracket, decided to pad with e-tape, as it also contacted several traces on the board. Had to access the back of the board. If you don't have an access panel with an opening cut into the case, which many don't, you'll have to completely disassemble your computer and remove the main board to install the cooler.

Helpful

Neoprimal

It fits!

Reviewed in the United States on August 13, 2013

Size: GeminII M4Style: Top DownVerified Purchase

That was a question before it became a statement.

The backstory: I had a recent PC upgrade and my still quite powerful Intel Q6600 became redundant. Instead of having it "waste" in my guest/tester PC, I decided to upgrade my HTPC which was running an E2200. This presented a few challenges; first of all, the board it was in is ATX. HTPC cases that fit ATX boards are indiscriminately big and chunky (I don't know why). It's as if manufacturers feel that users want 10 fans running in their HTPC. I searched high and low but could not source a SFF full ATX case. I have an Athenatec Evo and that fits the board, but as I mentioned, it's tall and frankly I wanted to move to something smaller. Since I couldn't source a case to fit my needs, my only solution was to source a microatx board which could fit the Q6600 and also contained all the features I needed from the Abit IP35 Pro I had - specifically, 4 DDR2 RAM slots. I had a microATX XFX board which would fit the Q6600, but like most microATX boards made in 07/08', it only fit 2 DDR2 RAM sticks. The final challenge was to source a new case as well. I thought maybe it'd be better to buy new guts, but an Intel solution would have cost upwards of $300 to match the Q6600, new board and 8GB RAM while an AMD solution would have been $250 - these costs aren't including the case or fan. I ended up purchasing an Intel microATX board, a Silverstone Milo ML04 and this fan to cool the Q6600, since not just any stock fan can quietly cool this beast.The board came and has a huge heatsink right by the CPU socket so I got pretty scared. Even with measurements, it didn't look like it would work - but it did! I ended up saving 200+.

The point: Even if it looks big and wide, check it out. Measurements don't do it justice. If it can fit in the Intel DG45ID, it has to be able to fit almost any microATX board. I will say that you'll need to watch RAM height. It doesn't affect my board but I can see RAM with tall heat spreaders being an issue for some boards.

The function: Works well. Works VERY well. It is almost silent and cools the chip better than my Zalman CNPS9700NT, which is quite annoying since that was such a big, heavy fan to deal with. I'm a Cooler Master guy now I think. Between this and the Evo 212, I don't think I need to go with any other brand unless I get into extreme cooling. To give you an idea of the full size, the fan and the board totals roughly 80mm tall. The ML04 has a height of 105mm and is one of the thinnest microatx housing HTPC cases on the market right now.

The recommendation: I fully recommend this fan for anyone needing to cool older CPUs or ones that run hot, quietly. I could have used a stock Intel cooler but the stock coolers are pretty loud compared to this and they're also not fun to install. You can get away with a loose push pin on celerons and pentiums but not on quad cores or anything running 100w or higher.
This one takes 5 or so minutes to install, less if you can follow instructions properly quickly and has a very rigid and solid fit to the CPU and board. I generally take my time to make sure I get it right the first time, but since I had experience with the Evo 212 on a 1155 chip, this was very easy and very quick for me.

2 people found this helpful

Helpful

Top reviews from other countries

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Ernesto Garcia

Justo por lo que pagas

Reviewed in Mexico on May 8, 2017

Size: GeminII M4Style: Top DownVerified Purchase

hay reseñas mezcladas para este disipador , pero es muy barato y sirve para lo que tiene. de primera mano es excelente opción , aunque si eres quisquilloso con las temperaturas probablemente termines sustituyendo el ventilador o el disipador completo.

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