COOLER MASTER R4-L2R-20AC-GP 120mm Blue LED Case cooler COOLER MASTER SickleFlow 120 R4-L2R-20AG-R2 120mm Silent operation Green LED case fan COOLER MASTER SickleFlow 120 R4-L2R-20AR-R1 120mm Silent operation Red LED case fan COOLER MASTER R4-L2R-20AC-GP 120mm Blue LED Case cooler

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: Worked for a month.

Cons: Other day when I opened my case and I saw the fan wasn't moving and it went out.

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: Great fan pushes lots of air. Nice led lights. Comes with nice quality screws and very easy to install.

Cons: no cons

Pros: Moves A LOT of air!
Blue led worked fine.
fits perfectly.
Easy to install.

Cons: Noisy!!! (I installed 2 of them in my computer at once, and each one is louder than my two previous 120 mm fans!) Seriously, if you are looking for a quiet fan upgrade to your pc, use another fan, these will get you a headache really fast!

However, I knew that before buying so it doesn't bother me too much, the airflow is decent enough to forget the noise they make.

Other Thoughts: Screws are tight so I suggest you to screw them first outside your case, unscrew them half-way out, and then just put them in place in the PC. It will be a lot easier since the "screw pattern" is already made. Sorry for that bad english, I didn't know how to tell it properly!

Pros: Fit perfect...moves great amount of air
I use this on my gaming PC. Cool light..but more important, it's quiet.

Cons: none...

Other Thoughts: going to buy second one.

Pros: Beautiful led pattern.

Cons: Sounds like a miniature turbine engine, a very high annoying sound.

Other Thoughts: These fans say they are 19db but i don't see how they could be.

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 .....