[2.4 W] Great fan compared with other fan in the market
Realy I trust in ASUS products

[2500 rpm] Quiet and easy to install

[120 mm] Since the Cooler Master fans were too thick for my Fractal Design case, I tried the Be Quiet Pure Wings 2. They did fit, and I can barely hear them. Decent airflow, and the price point was good. Also the PWM cable is long enough so you don't need extensions.

[2.4 W] Works great and looks great. Syncs with ASUS.

[0.765 lb] Great fan. So happy to have 4 pin so I can control with my bios fan pattern.

[76.7 CFM] Excellent product, works very well and leaves my computer with great air circulation.

[76.7 CFM] I decided to replace the brown Noctua fans that were visible through my case window with black fans. I'd read good things about BeQuiet and decided to try two of its fans. First impression was the weight of the box. The fan itself was noticeably heavier than the fan it was replacing. Installed it as the rear case fan and booted up the system. It almost feels like a wind fan blowing behind the case. The fan itself is very attractive and really improves the look of the case. I swore I'd never use anything but Noctua fans. But after trying BeQuiet, I'll definitely consider them in the future.

[76.7 CFM] I used these Lian Li fans in 2 high-end builds. I put 10 of them in a Lian Li O-11 full-size case and 9 in an O-11 mini case. Probably total overkill but zero temp problems and awesome looking too! I appreciate that these fans are machined out of solid aluminum...a huge step up from all the cheap plastic fan housings. Utmost respect and props for everyone at Lian Li. It's obvious to me that they really care about their products.

[120 mm] The company making these fans is aptly named. These fans are dead quiet. I changed these fans out on my son's computer and started the machine up. At first, I thought I did something wrong because I couldn't hear the fans, but the computer was on! The fans are a must if you don't want the constant droning of those older and louder fans. Highly recommend these!

[Case Fan] As usual, the be quiets packaging of this PC cooling fan truly compliments its high-end design features and manufacturing quality control standards. Note however, that once the taped seals of the cover's front panels were cut on both pairs of fans I had just purchased, my careful attempts to pull out the inserted locking tabs of their front panels to be very frustrating.
And all of this care spent to keep their cartons intact, should I decide to re-sell these fans. And it's my guess that all my frustrations were due to the thick, high pound test construct of the carton's material, plus the bit oversized latching ears provided along the sides of these locking tabs.
And as for noise levels, with 60 dBA being that for a nearby, average-sized, refrigerator, plus 30 dBA being that of a nearby whisperer, and once the noisier, fast run-ups are achieved, the subsequent steady state noise is definitely less than top-speed rated 31.2 dBA.
And take note, have my fan pair installed as optional CPU Fan #2's in my second budget build gamer, featuring Fractal's Focus G mini-tower, with an AMD Ryzen 7 over-heating prone 5800-X CPU, being cooled by it-s installed be quiet Dark Rock Slim cooler, and driving an AMD Radeon RX6600 GPU, with a be quiet's Dark Power Pro 750 Watt for power. All installed on a ASUS TUF Gaming B550M-Plus WIFI II motherboard. Plus, a must replacement of the Focus G's front fans with Fractal's GP-12 PWM fans.
And this combo keeps the at above idle CPU temps at 47-50 degrees C, even with BIOS DPM activated, and its ASUS optimized settings red-icon activated. And these be quiet CPU Fan #2's are running at constant 1700-1800 rpm. And all total, maintaining my peace of mind for the extra costs of these PWM fans chosen to install. And have yet to do several runs of the on-line gaming performance evaluators.