COOLER MASTER R4-BMBS-20PK-R0 Blade Master 120mm Case Fan

Pros: Ordered two fans, one is in use and other is on standby. Comes with screws and mounting pads.

Cons: None. Does what it's meant to do so far.

Other Thoughts: Using for extra airflow on a COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2. Fits nicely and works.

Pros: Rubber pads and metal screws make it easy to install in MOST places where a 120 fan would be easy to install.

REALLY quiet even at its highest RPM setting.
No issues with detection or Ramping up to highest rpm at all.
For the price you just cannot go wrong.

Cons: Shame they don't have front mounting screws it was a pain to modify some parts of my case to get them screw drivered in the "traditional way"

Pros: It seems to work very well and is very silent.

Cons: None yet.

Other Thoughts: I bought this to replace the back fan of my case, which was making a lot of noise. I am very happy that I replaced it.
If this one holds up, I will probably get another one to replace my front case fan.

Pros: Moves air about.

Cons: A bearing or something in the motor must have come loose about two months after I bought this fan. Now the fan constantly has a loud, annoying rattle and I need to buy a new fan.

Pros: Quiet on low. Not too loud on high. Lots of air at a low price.

Cons: None so far.

Other Thoughts: I like my computers quiet but my latest build was running a bit too warm while doing video rendering for hours on end. The Scythe (front) and Antec (rear) fans just weren't moving enough air so I tried one of these as an exhaust fan. My ASROCK mb has a 4 pin fan header and adjusts fan speed with temp and it's worked out perfectly. The computer is as quiet as ever during normal operation and when the load goes up the "whoosh" increases a bit but no other obnoxious noises appear. And case temps peak about 6-8 degrees cooler than before.

Pros: This fan fits my Cooler Master HAF 912 case perfectly, performance is really good (CPU and system temps are down 3-5 C on average), and the cables reach my MSI Z77A-G43 mobo comfortably (I got two of them). Simple in appearance, yet very effective.

Cons: None.

Other Thoughts: Slightly pricey but well worth it. Will buy them again if needed.

Pros: It works.

Cons: I wish the power cable was longer.

Other Thoughts: It may just be my setup, but I get a slight howl when the rpm goes up from the low setting on the motherboard.

Pros: looks great performs great

Cons: none

Other Thoughts: Would recommend to friends

Pros: I bought this fan to replace the stock fan on my Hyper 212 EVO heat-sink since it stop functioning. The snap-on brackets from the stock fan fit perfectly on this and it fits the heat-sink like a glove.

Cons: None at all.

Other Thoughts: I am sure that this fan is excellent regardless of it replacing my setup alone. It is also large enough to use as a case fan is so desired.

On a core i5 3570K # 3.4ghz I idle at 25-27c.

Pros: Comes with rubber spacers for noise reduction I assume.
Is quiet at 1600rpm which is where it's at now haven't had to go higher.
It does what I wanted it to, replaces current cpu fan -.-

Cons: Didn't lower my temps but I'm not running it faster than my previous fan so I don't expect it to.

Other Thoughts: I only bought this fan because the one that came with my CM Hyper 212 evo started making a grinding noise during startup until the bearings heated up also the fan kept dropping out in bios and with my fan software. I had suspicions that the fan was dying so I replaced it and no more bad startup sound yay!