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R4 series fans offer a unity of maximum rotational speed and optimum airflow. Using a unique long-life sleeve bearing fan, the R4 series offers long life rating of 50,000 hours. R4 series fans perform at a maximum of 69CFM at 2000RPM. These R4 series are available in red, green, blue LED and dark smoke (no LED).
Total Reviews: 2 Average Rating:
Not quiet at all02-12-2013
Reviewer: Grifter (1)
I generally like Cooler Master products, but this fan does not live up to its descrition. I have 2 Scythe Gentle Tyhoons, a Scythe Kaze Maru Slipstream2, and a BitFenix in my case along with this Cooler Master fan, and this fan is the loudest thing in the room. I can tell without any doubt which of my case fans are loud, and this oone is definitely it. Going to trade it out with a BitFenix 120mm fan soon.
Not too loud.01-11-2013
Reviewer: FadedMaster (14)
I have a few of these external to my case and even at 100% they are still fairly quiet. Every now and then you might get one that is a little louder, but I just let it run at 100% for a while and it seemed to get quiet like the rest.