be quiet! Silent Wings Pro 4 140mm PWM High Speed 2400 RPM Premium Low Noise Cooling Fan | 4-Pin | BL099

I used two of these Silent Wings 4 Pro 140mm fans to replace the stock fans on my FROZN A720 and they lowered my max CPU temp by EIGHT DEGREES(C)! I expected some minor improvement but I didn’t think it would be so dramatic. They’re clearly well-built and solid, and they’re completely silent except at high loads. Don’t forget to set the speed limit switch on the back of the fan to the RPM you want, but for heat sinks and radiators you probably want it on max.

Forget about basically any other 140mm out there, this is the one to get. If you have the budget to afford these, get them. You absolutely will not be disappointed.The amount of air these things move is insane but what's even more impressive is the noise level. Dead silent at 1k rpm, barely audible up to 1,600 rpm, and extremely tolerable at full tilt.These things also have insane build quality. It is a HEFTY fan and feels super premium. Even the cable is sleeved with a plastic connector and a be quiet logo! The additional accessories included in box are also very welcome.Seriously, this is basically the best performing 140mm fan out there right now. The fact that no other major competitor (Noctua, Phanteks) don't have a competitor for this, makes this a no brainer!

This fan is great! 140mm is the right size for me but what's even better for this fan is that you can swap out the corners for different needs as well as noise dampening bumpers. The connections is high quality and well made and it can barely be heard in my mid-tower case

After extensive research, I can confidently say the be quiet! Silent Wings Pro 4 140mm fan is a top contender in its size class. I scoured the market looking for the best balance of performance and noise levels, and this fan consistently came out on top. The only real competition I found was the Noctua NF-A14, but that's a significantly older model that hasn't seen revisions in quite some time. While the NF-A14 is a strong performer, the Silent Wings Pro 4 offers more modern features and refinements.My advice to anyone considering a 140mm fan: definitely check if Noctua has released a new revision of the NF-A14 (similar to their updated NF-A12). If they have, compare the two. However, as of right now, the be quiet! Silent Wings Pro 4 is the clear winner in the 140mm category. It delivers exceptional performance with minimal noise, making it the perfect choice for demanding builds where airflow and acoustics are equally important. Don't waste your time searching – if you need a 140mm fan, this is the one to get.

Bought this fan to populate the front panel of my Fractal Design meshify 2 as the fans that come installed doesn’t move a lot of air.The quality of these fans are top notch and can easily mark them as the best 140 mm fans period.At higher rpm they become audible but not noisy.I’ve installed two of these and I’m quite happy with the performance and cpu temps are under control idling at 35 plus degrees Celsius.Versatile fan , can be used for many purposes with special removable corner brackets.Has a switch that limits the full speed.Build quality is great and the 4 pin connector is very nice, but can be difficult to route in small holes.Cable is very flexible.

Definitely the best fans I've ever purchased. Solid, high build quality, and they move a lot of air.

Ordered 4. Great temps and very quiet. I use High modes for my 140s and the highest for my rear 120

These 140mm fans have been a blessing for a case that is known for not having great airflow. The fans operate quietly with sufficient cool air being pulled outside and pushed into the case toward the rest of the components. I currently have them 2 set to HS since this case has difficulty with air intake, which does make slight noise at around 1200-1300rpm. Apart from that, if your case already has good airflow, you'll find these fans to be extremely quiet. One con for this fan though is the screws provided are difficult to install but the push pins provided alongside are very easy to put on