Scythe Kaze Flex II PWM, 120mm, Premium Quiet/Silent PC Computer Case Fan, Quiet Model, Low-Noise Optimized, 4-Pin, Deluxe Black Colour, Single Pack

I dont remember giving anything a 5 stars review, but this fan definitely is worthy. I built a Core i7 11th gen budget PC, which is known to run very hot. With a stock case fan, the CPU was idling low 50s degrees C, and just light to moderate load caused the temp to go up to 70-80 degrees C. I saw a comparison review on Youtube where the author gave this fan a good review; in fact the author recommended this one over the more expensive Noctua and Artic fans. Considering the price, I decided to give it a shot. So I replaced the stock case fan with one of these and added another one to the front of the computer case. The result: CPU now idles mid to high 30s, and at 100% load, barely reaches 70 degrees C. My GPU also dropped around 10 degrees as well. Im really happy with these results because Im not a heavy gamer, so most of the time, the CPU will be around 40-50 degrees. The noise level is totally acceptable; I dont have metrics to give, but just judging from the ambient noise, this fan is very quiet. Considering the price and performance, I would go back to this fan any time I build a PC. Just remember the general rule to channel the air in one direction for all the fans inside the case; in my case, all the fans work pull air from the front and push out to the back of the PC (dont forget the orientation of the CPU fan as well, if applicable). Highly recommend this fan.

In my opinion the extra fan blades make some more airflow at the low 1200rpm top speed. Included rubber pads are nice and still keep the fan pretty flush.

Something that is not noted in the product, and I did not find out until I had already purchased 3 of these fans for my new build is that the specs are listed as 300-1200RPM PLUS OR MINUS 200 RPM.

Very good fans for the money, bought two of them and theyre super quiet and work well in keeping my system cool. Great value fans and look nice!

I bought these as case fans for a high airflow case. I have about 3 pushing and 1 pulling air through the case. At full speed they can be heard, at about 800 rpm which is where my motherboard keeps them the noise level is well below ambient- air conditioning, and plumbing are much louder.

These have great flow characteristics on low fin heatsinks, like those found from scythe, and cases. In both cases, they are extremely quiet, more so than the Noctua Redux that I replaced, where at 1200rpm you could hear the buffeting air with the noctua. Not that it was a bad sound mind you. It is much better sound than the noctua is what I am saying though. May system is running cooler with these, but that is my case supports 3 120mm or 2 140mm. So getting these allowed me to add one more fan verse the 2 140. This offers better pressure characteristics and encourages flow.

Id go with Arctic for quiet fans that cool well. [If you dont want to spend a fortune on Noctua fans]

Like everything about this fan!