( 4.6 Average / 23 Ratings )
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Deliver best air flow throughout the case.
With few possible exceptions, Noctua is the quietest for the amount of air it moves. That, along with lifespan, is why I bought these. The side fan (always on) does most of the work on providing fresh air for the CPU, GPU, and PSU, whereas the front fans are primarily for the RAID arrays (set to come on once the CPU reaches 35C then 40C). The rear exhaust only kicks in once the CPU gets to 45C. The Asus fan controller is based on the CPU temp. Never running faster than 700RPMs, these fans work quietly well.
When I bought this, I didn't realize it wasn't PWM, but it's an exhaust fan and it's silent, so no real complaints.