COOLER MASTER R4-L2R-20AC-GP Blue LED Case Fan

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great replacement fans, dont move a ton of air, but are okay for the most part. Plan the build accordingly, as the cables are pretty short.

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Great Fan for the price, but don't expect too much at this price.

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I purchased this fan to replace a noisy and barely functioning fan at the back of my case. A few months after having it installed it made a little bit of noise occasionally. Now a little less than a year later and this thing is making an extremely loud and high pitched noise. Extremely irritating to say the least.I would steer clear of this fan, and find something of higher quality with good bearings, as these have already worn out after 8 months.

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Great fan, but had to connect it to the motherboard's fan controller instead of the included molex connector in order to avoid it sounding like a jet engine 24/7

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No complaints at $5 a fan, works exactly like it should. I have 4 of these guys connected + the stock fans and don't run them all at max speed so I can't comment on noise. I'm sure It would sound like a jet plane if I did though.

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not recommand for people who does not like noises 6 bux... i got xigmatek white led 120mm fan for same price before they run way much quit..

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I purchased 4 of these to go into my brothers Cooler Master Haf 912 case. It looks really nice with the blue LED, it also gave the case good airflow.

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For the price you can't go wrong, There are better fans out there but they can be $15+

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If you care about logos facing certain was, get this for an intake fan, or else you will be swapping it around. Facing it other way kind of ruins the look because of plastic backing on opposite side.

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Cheap but reliable case fans that get the job done.

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when I first tried it didn't turn but now it does. Don't expect to much of the lighting.

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Cheap and good. If you dont care about silence then these will work well. The LED's are not super bright.

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Bought these to go in Coolermaster Cases, the fit is good and they move the air very well. Very silent running and control very well with fan speed controllers. Bought them on sale for $4.99 each, a great price for a good fan.

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Good fans for a tight budget!

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This series of fans can be found pretty cheap on the net and price matched here. It was a little louder then I thought, probably because I didn't know what 19 dba was supposed to sound like, but whit a fan controller or in my case Asus Fan expert 3 it can be set to a comfortable level.Edit:the fan makes a weird noise when I change its position or turn it around but it goes away after a while. This review was modfied by poster @ 10-23-14 09:35 AM

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Good fan that are cheap and that comes with bright LED.

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I've purchased about a dozen of these sickle flow fans in red for various builds. Never had and never needed a blue one until recently. I bought one on sale from the Aberdeen store. As expected, it performed no-different that the red version.Good for a case fan or a secondary heatsink fan (in pull) but not recommended as a primary fan (unless your cpu runs really cool). I installed this on a CM Hyper 212 evo that was running my cpu at sufficiently low temperatures. I did not really need to install a second fan but I just wanted to make the coolor looked "balanced" and square instead of being lopsided with just the single PWM fan.At regular price it seems a bit expensive but a sale price or pm'd it's a good deal.

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Great fan for a first build of mine and great price

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I bought four of these as a cheap and nice-looking cooling solution for my brother's rig. It certainly performs better than the case's stock fans, but they are very loud.All and all I will upgrade to Cougar fans and would suggest looking into them rather than CM fans.

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Decent fan for the price when on sale. The LEDs aren't as bright as I was hoping. I was expecting a much brighter fan like in the picture, or what Cooler Master's quad LED fans used to do years ago. Other than that, the fan itself moves a lot of air, but it's also fairly loud. I have 5 of these in my Antec P280W with 2 stock fans. It sounds like a box fan for a PC but a fan controller could help remedy this.For the price, I can't argue. It lights up and moves air.

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When used with the Scythe Kaze Master fan controller, it shows that it's only 1800RPM max. Not sure about when plugged into a computer.Noise is silent enough. 19DBA at max? Not exactly, but it's pretty decent. Much quieter than Antec Tri-Cool.

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If you plug it directly into a power supply course, it will function at 2000rpm, which gives you lots of air flow, but also loud noise. it's better to connect it to the motherboard(chassis fan plug) so you can adjust the speed.the led effect is not as clear as the pic shown above.

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I purchased this fan for dirt cheap. It seems to be a good fan for the low price (when on sale). I bought it for stock and I won't hesitate to install it in a customer's computer.

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If my memory serves me correctly, I was on a tight budget so these were the cheapest fans available at the time. it works fine. Be warned: the screw heads strip off easily especially when there is no screw grooves on the plastic fan holes (you have to force screw and make your own).

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Sweet Blue, not too noisy, get em on sale , or price match em.Screws are a bit cheap,they tend to strip, and they could have at least come in black.Get what ya pay for i guess.