Bluegears - b-PWM 80mm Speed range 500-4000 RPM, Airflow at 78 CFM, 2 ball bearing, 4 pins PWM fan - Blue

Stop your CPU from overheating with this Cooler Master Hyper 212 Black Edition fan. The Silent Driver IC technology keeps noise and power consumption to a minimum, and its four heat pipes effectively dissipate hot air. This Cooler Master Hyper 212 Black Edition fan includes a push-pull configuration to exhaust heat faster.

StarTech.com FAN8025PWM 80mm Computer Case Fan with PWM - Pulse Width Modulation Connector

Add another CORSAIR LX120 120mm PWM Fan to your iCUE LINK setup, keeping your system cool with PWM fan speeds up to 2,400 RPM. 18 RGB LEDs across dual light loops bring amazing lighting to your PC with the refreshingly simple setup of iCUE LINK. With 5.22mmH2O static pressure and 69.9 CFM airflow, the LX RGB has the cooling power to match its looks. CORSAIR AirGuide technology features anti-vortex vanes that concentrate airflow for optimal cooling. Enjoy quieter operation and extended fan life thanks to CORSAIR Magnetic Dome bearings. The revolutionary iCUE LINK ecosystem connects all your components with fewer cables – including the ability to connect your fans together directly into a single seamless block.