Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
- Up to 69.69 CFM (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
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
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(out of 38 reviews)
List Price: $ 9.99
Price: $ 6.59
Review by Misty Cahoon for Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
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It blows air.. it is quiet.. It is not as bright as the picture shows by any means. I uploaded a few pictures just to try & show you.. Not the greatest pictures but more realistic then the one Amazon has up there lol. Great for the price but if you want something brighter, look into another fan!
Review by Michael Thomas Hand for Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
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I was kind of skeptical at first but after the first week of installing this fan in my case I love it. It keeps my system temp at no higher than 84 degrees. Would recommend for anybody that needs better system cooling fan.
Review by J. J. Barinas for Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
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I bought 2 of these to replace the fans that came in my case. I am very happy with these so far. They are very quiet and move plenty of air.My case temp hit about 40c tops with the fans set at the lowest speed setting in the BIOS.I have 2 Radeon 4770 cards running in crossfire mode, as well as having my system overclocked.
Review by demon for Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
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Amazon originally showed this fan having dimensions of 120 x 25 x 120 inches. Clearly a computer case fan is NOT going to be 10 feet wide, 10 feet high, and 2 feet deep. Being a conscientious sort of person, I clicked the ‘update product info’ link and submitted a correction that the dimensions should be in mm (millimeters), not inches. I even provided a link to the CoolerMaster (manufacturer) website product page to confirm what should be blindingly obvious.. so what happens? I get an email a day later telling me Amazon cannot make the correction as they can’t verify it, or I am incorrect. Unbelievable.
I resubmitted the correction, along with a few choice words. This time they change it, but instead of changing the product dimensions from 120x120x25 inches to 120x120x25 mm as it should be, they actually calculate the conversion from mm to inches, and currently the product dimensions show as 4.7 x 1 x 4.7 inches, a sizing that nobody who purchases case fans will recognize, as case fans are always classed in terms of mm, not inches.
Seriously, you can’t make this stuff up. Amazon, you have really outdone yourself; you get the gold medal for sheer stupidity. Good luck trying to make many sales on this product as it stands! I have submitted a correction once again – maybe Amazon can get it right the 3rd time, but based on what they’ve done so far, I wont hold my breath.
Here’s the manufacturers product sheet if anyone wants to see the real product specs:
http://www.coolermaster-usa.com/upload/download/155/files/ProductSheet_R4-L2R-20CG-GP.pdf
Its a 90 CFM, 2000RPM, 120x120x25mm case fan, with relatively silent 19dBA noise level and sleeve bearing type.
Despite it being listed as a CPU cooler fan, it is not pulse width modulated (PWM), so if plugged directly into the motherboard it would run constantly at the full 2000RPM, not variable speeds depending on CPU temp. If you run it through a separate manual fan controller device it would work fine though.
This certainly makes an ideal case fan imho (I have a couple of them in my case) – it has a higher airflow than the standard CoolerMaster 120mm fans, which usually run around 69CFM or less depending on the model. It’s a good product, shame Amazon seem to have such an issue getting the specs right. 5 stars.
Review by J. Giussi for Cooler Master 120mm Blue LED Case Fan – (R4-L2R-20AC-GP)
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When you buy a cooler master product you know you can’t go wrong. I bought one of the 120mm green led fans plus one with red leds and another one with blue leds. They work like a charm. Quiet and reliable. I’m very happy with them and I’d recommend them to anyone.