Summary: The Good: Very quiet with impressive airflow. Used to cool high-end dual Xeon severs rebuilt in new full-tower EATX cases. These fans move 1.5-2 times the air volume of the famous-brand fans replaced. 8 degree C temp drop. If LEDs are important, these fans do not have them, but the white blades are attractive, especially in a B&W case. Its hard to get excited about case fans, but these are exceptionally good products for the money and highly-recommended.
Summary: This is a crazy good fan. I'm running 4 of them in my newest build, and I never hear them running. At first I was skeptical that it was actually cooling due to the utter lack of sound, but after checking my temps, this fan cuts the mustard. One point worth noting is that these are 3 pin fans. Not a problem really, but make sure you can power it. If you're looking for molex fans, keep looking.
Pros: -Quiet... Like, scary quiet. Like Children of the Corn quiet. -High airflow keeps my rig comfortably chill, even in the unairconditioned summer heat.
Cons: Occasionally talks about forcing mankind into slavery. Causes dissention amongst other components. j/k Seriously though, no cons here.
Summary: why the product got 4 stars is because i had to modify the fan to get it to work correctly. The vibration was not terrible, but it was severe enough i thought about the bearing wearing out prematurely. I cut a moon shaped piece about 1mm at it's thickest point off the edge of the sticker that was closest to the base of the fan blades Then when powered on it was super smooth GREAT FAN!!!
Pros: -silent at full speed -good CFM -good static pressure -can be mounted in any orientation
Cons: -sticker was not centered causing a substantial vibration
Summary: When connecting to my Sabertooth z77 motherboard I could not get the chassis fan 4 pin connections to display the rpm for this fan. Any chassis fan connection I plugged this in (there are 4 on this motherboard) just displayed as N/A for rpm. I could mess around with the speed in the ASUS Thermal Radar program and see/hear the fan spin up or slow down but I could not get the RPM.
Pros: Unique style and high quality fan, construction feels and looks very solid
Summary: Knocked an egg off for the minor inconvenience. These are still the best fans I've used that don't hum from PWM control. They also move more air than most at similar RPMs. Replacing the bearings isn't something I was looking forward to doing. Oh well, you can't always get everything perfect.
Pros: Moves quite a bit of air at low speeds. PWM. Dual ball bearing.
Cons: After a month with 2 of these mounted on my H100i blowing out the top of my case, 1 fan started to develop a slight hiss/grind sound. I found that the bearings in 1 of the fans were the culprit. Luckily I have a box full of bad fans so I replaced the bearings with those off a Delta fan. Now it's very quiet.
Summary: I recently replaced the fans that came with my Corsair H100i with two of these because they produced motor noise. There is no motor noise, just the sound of air. I can actually feel air going through my radiator at its minimum RPM (something that required the stock fans to be on full bore to equal).
Pros: Works very well on radiators. Very quiet. The only sound you will hear from it is the air it's moving. No high-pitch whine when controlled via PWM like most fans I have tried.
Summary: These fans are very quiet for the amount of air they push, which is why I bought them, and I was not disappointed. Some people here have said they're not quiet... well, yes, they are, _as high airflow fans go_, but if you are forcing a good amount of air through a fan grille in your case, it's going to make a whooshing noise (apart from the mechanical and air noise the fan itself makes). That will be true of any fan pushing the same amount of air through.
Pros: Low cost, quiet, good airflow, light weight compared to other fans of its size, fluid dynamic bearing, 6 year warranty This is not a plus, but I ran out of room in other thoughts... this fan is rated at 1350 RPM, but mine spins about 100 RPM higher when set to 100%.
Cons: Doesn't have the same feel of durability in my hands that the discontinued Scythe S-Flex series has (other side of the light weight), sharp blade edges will cut you if you touch them when fan is running. Neither is enough to take off an egg (you should not touch the fan while running). Newegg, you have a dirty mind if you think a word that rhymes with smudge and is used to describe a chocolate candy product is inappropriate. Grow up.
Summary: I had two of these that I've been using for about 2.5 years, and I was so impressed I decided to add 3 more to my case for my latest rebuild. Probably overkill, given how powerful they are, but better too much than not enough cooling. Airflow is amazing in this system now. As always, Newegg is the best. Can't believe I ever bought from anywhere else.
Pros: - CFM rating is legit. These move a lot of air. You can't beat the efficiency for this price. - Quiet. Not really sure what happened with the people saying these are loud, as even a small CPU cooler is louder right now. And I'm running 5 of these units.
Cons: No molex connector. Not a biggie, as I had some adaptors laying around.