Be Quiet! (BL098) Silent Wings Pro 4 120mm PWM Case Fan, Black, Up to 3000 RPM, 3x Speed Switch, Fluid Dynamic Bearing Non-Profit This has also been considered

This has also been considered in the design of the fan

Four high-performance copper heat pipes

Pure Wings 3 can be operated with very low minimum rpm for very quiet operation

It is for this reason that the fan blades of Silent Wings Pro 4 140mm PWM have been developed newly from scratch

Pure Rock Pro 3 Silver features 6 nickel-plated high-performance copper heat pipes with nickel-plated base

Be Quiet! (BL098) Silent Wings Pro 4 120mm PWM Case Fan, Black, Up to 3000 RPM, 3x Speed Switch, Fluid Dynamic Bearing Non-Profit This has also been consideredSilent Wings Pro 4 120mm PWM is the most progressive, performant and versatile fan by be quiet! Optimized fan blades for the highest performance on radiators and heat sinks Speed switch allows changing maximum PWM speed between medium speed, high speed and ultra high speed (up to 3000 rpm) Small tip clearance and a fan frame with a funnel shaped air outlet for extremely high air pressure Virtually inaudible operation at regular speed 6 pole fan motor