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  • Cooler Master 120mm Green LED Case Fan - (R4-L2R-20CG-GP)
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Cooler Master 120mm Green LED Case Fan - (R4-L2R-20CG-GP)

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  • Up to 90CFM (maximum RPM)
  • 19 dB-A silent application for CPU cooling
  • RoHS compliance for protecting the environment
  • Recommended for V10, V8, Hyper 212, Hyper Z600, Gemini, Cosmos, Cosmos S, Haf 932, HAF 922, CM Storm Scout and Sniper
  • 50,000 Long life hours
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Product Details

  • Product Dimensions: 4.7 x 1 x 4.7 inches ; 4.2 ounces
  • Shipping Weight: 4.8 ounces
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0026ZPFC0
  • Item model number: R4-L2R-20CG-GP
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (88 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: November 14, 2008

Product Description

Product Description

R4 series fans offer a unity of maximum rotational speed and optimum airflow. Using a unique long-life sleeve bearing fan, the R4 series offers long life rating of 50,000 hours. R4 series fans perform at a maximum of 90CFM at 2000RPM. These R4 series are available in red, green, blue LED and dark smoke (no LED).

From the Manufacturer

R4 series fans offer a unity of maximum rotational speed and optimum airflow. Using a unique long-life sleeve bearing fan, the R4 series offers long life rating of 50,000 hours. R4 series fans perform at a maximum of 90CFM at 2000RPM.


  • Up to 90CFM (maximum RPM).
  • 19 dB-A silent application for CPU cooling.
  • RoHS compliance for protecting the environment.
  • Recommended for V10, V8, Hyper 212, Hyper Z600, Gemini, Cosmos, Cosmos S, HAF 932, HAF 922, CM Storm Scout and Sniper.
  • 50,000 fan life expectancy.


Model R4-L2R-20CG-GP
Dimension 120mm x 120mm x 25mm
Voltage 12V DC
Current (Ampere) 0.35A
Input (Watt) 4.2W +/- 10%
Speed (R.P.M) 2000 R.P.M
Air Flow (CFM) Up to 90 CFM
Air Pressure (mmH20) 2.94 mmH20
Fan Noise (dB-a) 19 dB-A
Weight 116g / 0.26lbs
LED Color Green
Bearing Type Long Life Sleeve
Fan Life Expectancy 50,000 hours
Connector 3 pin
3 to 4 pin adapter 1 pcs
Screws 4 pcs

Customer Questions & Answers

Customer Reviews

The fan works great and looks cool.
Timothy A. Lindsley
The green led's are a bright bright color, and the smoky color of the semi-translucent blades makes it look really neat.
T. Connelly
They move tons of air at 100%, but are quite loud.
T. Burris

Most Helpful Customer Reviews

4 of 4 people found the following review helpful By T. Burris on March 22, 2010
Verified Purchase
Decent fans, but a bit over-rated. They move tons of air at 100%, but are quite loud. I'm running mine at 7V and get moderate airflow with almost no noise. Also, the speed sense function doesn't work for me. (my EVGA x58 mobo will not run them at less than 100%) I still love them and would buy them again. They aren't overly bright, and are true green in color.
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3 of 3 people found the following review helpful By E. Step. on June 9, 2010
Verified Purchase
This was a touch annoying in building the themed computer they went into.

Each unit (6 have been ordered so far) has a different pitch when spinning up (unlike 99% of the other fans that CM shipped with cases, or have been ordered as replacements). The one drive is around twice as loud as the rest, ended up putting that rpm to about 1/3 of the others to remove the noise (fan works as a secondary intake, no need to replace a working fan).

Pros:
the smoked plexi/acrylic design looks great in cases (not a fan of crystal clear ones).
The LEDs change brightness as the fans increase in speed/ flicker when powering down (client liked this a lot)
very effective at moving air
fasten very securely
non-obnoxious level of light

cons:
screws are a nightmare to get started (tip: take a phillips screwdriver and grind out the very very start of the holes, they thread MUCH easier after this)
variations of pitch (some are VERY annoyingly high pitched at medium rpms)per unit
screws provided are soft metal(try the above tip to prevent stripping the head)
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3 of 3 people found the following review helpful By rbreezy on May 20, 2010
Verified Purchase
Pro:
Price for 3 = free shipping
Move a lot of air
high quality components
My computer is chilllllin...
I can add more components and not worry about overheating

Con:
Louder than most computers in use. ( I Knew this going into the purchase ) But most people only use computers to go on faceb00k anyways.

Other:

After buying a cheapo case and power supply combo, I realized it had no fans. yikes ! I have to protect that nice new processor and motherboard.

Setup:
AM3 Athlon II x2 255 3.1ghz
MSI 890GXM-G65
Seagate 1.5tb W7
Crappy case :(
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3 of 3 people found the following review helpful By Louis R. Portillo on January 12, 2011
Verified Purchase
I AM A SUUUPER HEAVY PC USER. I use my pc for gaming, lan parties, entertainment, work, school, and TV. this fan looks awesome and still runs like a champ after almost 3 full years of heavy use! still running strong and bright since i first bought it. definitely recommend this to anyone looking into green big quiet fans.
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2 of 2 people found the following review helpful By JoelQJack on April 14, 2010
i bought this fan about four months ago for a cooler master GLite case that i had purchased. this was also my first purchase on amazon- and i must say, i was impressed with the speed of delivery. the fan install was a simple process (it's a fan, how hard could it be?), and when i powered the system back on i was treated to the bright green lights of the fan in my case. my first impression was that the fan is very efficient and very quiet. the temps on my video card went down about 6 degrees (celsius) after installing this fan. i would highly recommend this fan to anyone looking for a quiet fan that does its job and adds a bit of color to your case.
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1 of 1 people found the following review helpful By Ray Lee on December 28, 2009
Verified Purchase
Great fan, bright Green LED. Very loud, but I'm a gamer so that doesn't matter to me as I'm looking for usability not quietness. Comes with four special screws(The tips have a scraper kinda thing as the fan's screw stocks don't have any pre-cut swirls)that eases the effort to put the screws on.(I tried to use four spare screws that I had from another spare fan, didn't work out so well) Overall great buy for just ten dollars.
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1 of 1 people found the following review helpful By Daniel C. Saunders on April 7, 2014
Verified Purchase
This is a better quality fan overall from my others. However, the LED does not glow over the whole fan, like in the image. Instead it leaves four lines that curve and appear stationary. My other LED fans are much more appealing, and I'm probably going to give these to a friend in favor of a better looking brand.
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1 of 1 people found the following review helpful By Nate on December 7, 2011
I bought the red led version of this, its a little bit dim but a plus for me. no bright lights in my face!! lol, pushes an okay amount of air. However, it only pushes 69 cfm at max rpm, and not 90 as stated here on amazon.
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