FITS COMPACT ENVIRONMENTS The low profile version of our highest performing fan that fits small form factor builds. Compared to standard AF120 ELITE 59.1 CFM, the AF SLIM Series achieves comparable airflow of 56.3 CFM, providing the perfect balance between low noise and high performance to builds where full size fans simply can‘t fit. AS QUIET AS A WHISPER Thanks to its low-noise design, the AF SLIM Series fan spins as quietly as 27.5 dba. When your computer is not in use you can count on CORSAIR's Zero RPM mode to eliminate fan noise. Fans will spin only when temperatures reach the threshold you've set in CORSAIR's iCUE software with a CORSAIR COMMANDER fan controller. EXCEPTIONAL DURABILITY ITX builds and maintenance are a particular challenge. Fan durability matters more than anywhere else here. The fluid dynamic bearing in AF SLIM fans uses lubricant to reduce friction between shaft and bearing, ensuring exceptional durability and minimal noise.