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: 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.
Summary: Get em if you want extra airflow and cooling in your case. I fell in love with arctic fans after getting their A30 cooler. This companies fans are great an look good to boot.
Pros: Very good and cheap. Really gets the air flowing in the case, and just two of these (one in the front, and one in the top) have reduces overall cpu temps by at times around 10f degrees. 3 pin with a long wire to reach where you need it to go. Comes with fand and 4 screws to use.
Summary: I mounted this as a side fan. It had a grill, It was protected, and my GPU was getting a bit warm for my tastes. This fan is attached to the side panel of my Cougar Challenger case and my motherboard's PCI-E ports are right below that spot, giving a fresh supply of air to my GPU. The reason why this is on the outside and why something else isn't on the inside is because of my massive heat sink reducing the clearance between it and the inside of the side panel.
Pros: A silent fan. Provides enough air to help my GPU cool off a bit (see other thoughts). PWM controllable, but I didn't hook it up to it.
Cons: (More like a heads up) Learn from my mistakes young eggawans (I tried). This fan is mounted by rubber stoppers that suspend it in the air. Those holes are not for your screws, there is no need to rip them out of their sockets. However, if you do this by accident all that is required are some needle nose pliers to pull them back through.
Summary: I strongly advise sheathing the cable just to be safe. Other than that I am very satisfied with the quality of the fan and its performance (minus the cable).
Pros: Moves a large amount of air with nary a sound. The fan looks cheap but has a solid feel. Fan cable has a separate plug for the RPM sensing (not shown or described) which works out perfectly for my scenario because I have it hooked up to a fan speed controller.
Cons: Extremely thin wires that if caught by a fan blade will more than likely cut. PWM chain connector is permanent.