COOLER MASTER R4-BM9S-28PK-R0 Blade Master 92mm Case Fan

Pros: -Great speed variability for quiet when you need it and awesome cooling when you need it
-PWM

Cons: -More than i wanted to spend

Other Thoughts: -I replaced the fans on a Cooler Master Hyper N 520, it's stupid that the stock fans were 3 pin, and my motherboard couldn't control 3 pin, but i'm very happy with these fans

Pros: Great RPM range
Quiet given it's ability

Cons: Fairly expensive for a sleeve bearing fan.

Other Thoughts: This fan is great because it can be run very slow and quiet @ ~900RPM at idle, or the mobo ramps it up to 2600RPM while playing games to move a ton of air at a very noticeable increase in sound. This is one of the few fans to offer this RPM range.

Pros: It has good airflow.

Cons: Leaks oil all over itself. I have never seen this happen with any fan. Bad quality control? I expected better from cooler master, their products are usually good.

Other Thoughts: I have the TX3 so I ordered this fan so I can have a dual fan setup with the same fans. As a matter of fact, the other fan leaks oil too!

Pros: I bought this as a second fan for my Cooler Master TX 3 CPU cooler and I gotta say I am very happy. It makes a difference installing a second fan on the cooler and my Phenom II 955BE is now about 5°C cooler than before. Tottaly worth it if you want to overclock you CPU.

Cons: Not really a CON, but the fan only comes with a four pin connector....make sure you have pins left on you motherboard for it.

Pros: It is a pretty quiet fan, has a nice sleek look to it and works great. It can move a lot of air at max speed.

Also, for some reason my motherboard just doesn't do well with low-power fans.

This one can draw up to .26 Amps which is a plus for me because the motherboard needs to detect a decent amount of current draw or it will get that "fan not detected" message.

Cons: A little pricey for a single fan, but not too bad

Pros: Performs as rated or better, comes with rubber pads for the mounting locations to reduce vibration. Could ask for more.

Cons: none

Other Thoughts: PWM so it can be used with non linear fan speed controllers. So they won't put out extra heat or waste power.
Also can be used with cpu fans that have went out if the size is applicable, which is what i used it for in my instance.

Pros: These fans are very quiet and have good air flow. They are a great price compared to many other fans that are not as quiet. You can't beat the price compared to more expensive fans that aren't even as quiet as these Coolmaster fans are.

Cons: There are no negative things to report about these fans at all.

Other Thoughts: I would suggest these fans over any other fan sold. I have done YouTube reviews and listened to many other fans that were said to be the most quiet ones on the market and they were louder than these Coolmaster fans. Do your research before buying or you'll waste your money. You can't go wrong with Coolmaster fans. I have bought many different size Coolmaster fans for all three on my custom computers at home and I'm telling you they are super quiet fans.

Pros: keeps case nice and cool little loud but works great

Cons: none

Pros: Super quiet, has cushioning and extra screws, nuff said.

Cons: none whatsoever

Pros: This fan works perfectly with the TX-3 cooler. It's the same fan which comes on it, and it compliments it well as the second fan.

Cons: Price

Other Thoughts: Just include it with the cooler to begin with. Don't turn this into a scavenger hunt, Cooler Master. We don't need to feel like we are saving money when you're actually just splitting the sale into multiple pieces.