COOLER MASTER SickleFlow 120 R4-L2R-20AR-R1 120mm Silent operation Red LED case fan

Pros: -
- Very quiet, even at full speed (make sure you have a firm mount).
- LED brightness appropriate

Cons: - None.

Other Thoughts: I bought 4 of these to replace the stock fans for my HAF 932 (black edition). Cooler Master put 4 fans on this full tower. There are 3 230mm fans 1 is located on top as exhaust, 1 one the side as intake, and 1 more intake in front with red led. Last but not least, the 4th fan (140mm) is located in the back as exhaust.

I decided to replace the top 230 with 2 of these and the side 230 with 2. I also installed a Corsair H50 so I had to remove the rear 140mm to use it's location for the H50 fan. I used the stock 140 with 2 of these I purchased for more gpu cooler..

Pros: Inexpensive.

Cons: Very noisy.

Other Thoughts: I ended up not using it because it was noisier than I could tolerated.

Pros: Moves air, quiet, color is great.

Cons: Extremely short lifespan

Other Thoughts: I purchased 2 of them from a local electronic store, and after only 4 months, one of the fans started making a sort of grinding noise, after feeling the back next to the motor, I can tell that the rubber grommet that holds the bar that is connected to the blades is pushing through. Unfortunately this has happened with the second one 5 months later.

Pros: - Silent
- works well with my fan controller
- good led light
- CM

Cons: none

Pros: They move air.

Cons: These fans are loud. I would return them but it would cost more for me to do so, then just toss them in the garbage can. I bought 2. It was a waste of 20 dollars

Other Thoughts: I am really disappointed with these fans. I like Coolermaster. I purchased the StormScout2 Advanced at Newegg last month. Best case I have owned. But these coolermaster fans, are .....

Pros: One of the best static pressure fans available, and easily the cheapest. This fan is actually rated slightly higher static pressure than either the Corsair SP120 or the Noctua NF-F12, and far cheaper than either one. It's only reasonable equivalent is the BitFenix Spectre, but those are lower RPM and thus quieter and lower pressure. Spectre Pros are higher CFM but sacrifice pressure to achieve that. Seriously, this is one of the best pressure fans you can get, and operates at it's advertized sound-level.

Cons: As another reviewer pointed out, having this fan intake through any kind of mesh will drastically increase the volume of the fan, and even cause a whine too. I've also come to realize this same whine happens when installed in push-pull on radiators due to just how much pressure these fans are capable of, acting on the pulling fan making it spin up more. If you are getting these fans, filter them yes, cover them in mesh no. If you are using them on radiators for a LCS, go push or pull not both.

Other Thoughts: Let's see here... so many reports of the fans being too loud... Much louder than advertized...
Well, let's check... Oh? 19dB is considered the same volume as rustling leaves? Well, in all honesty these sound a great deal quieter than that... Audible to be sure, but if you knew how dB scaled then you would expect how loud they could be... right?
Sarcastic call-out of all the stupidity below aside; If you really want silent as an option and performance as an option, you cannot go wrong with these fans and a fan speed controller. They are cheap enough you can afford a speed controller instead of getting the louder and more expensive alternatives that can't perform any better. I've tried them too by the way, I got these as an experiment and was beyond impressed with them over my Corsair SP120s and Noctua NF-F12s. I also thought the BitFenix Spectre fans would be better if they had the ability to go to 2k rpm like these. Glad to know I was right in that. Sad I passed them over for so long.

Pros: The fan looks nice, But that is it!

Cons: The fan is very noisy right off the bat. The noise is so loud that it is louder than my video card fan, it also has a problem with the bearings and axle which is part of the reason the fan makes so much noise in the first place.

Other Thoughts: I would not buy this fan again, all the other Cooler Master product I have purchased in the past work without a hitch. So Cooler Master products still rock, Just not this one!
:(

Pros: Moves lots of air, black, surprisingly quiet, and cheap...i got for like $6 each on sale a while back.. have 2 in the case now waiting for cpu to come in to see if my 3rd will fit up top

Cons: LEDs

Pros: Good fan and it looks cool, the colors are excellent, its not too bright to the point where it is blinding. It has the perfect amount of light emitting from it. CM Sickleflow looks great in my Storm Enforcer Case. I used it as a rear fan and it moves a lot of air. For a fan that has range of RPM its pretty quiet, it is audible at full speed but not annoying. Just a reminder it is a 3 pin fan.

Cons: none

Other Thoughts: Good fan, great lights. I would recommend.

Pros: It's a Fan & it spins, round & round it goes

Cons: it doesn't go in reverse & it won't cook breakfast

Other Thoughts: My mind is a blank