Computer Case FanThe performance fan PWM version is ideal for high efficiency case, radiator and CPU cooling as well as other applications that require both extended performance headroom and PWM for speed control. 80mm cpu fan 4 pin Computer fan are ideal for PC cooling, fitting perfectly in PC towers and cases while efficiently cooling components. Also for server setups, desktop CPU fans and effective in keeping graphics cards cool. Dual Ball High CFM fan is designed to maximize airflow and can be too loud at full speed for some applications. Making it an ideal replacement for broken or old fans. Effective temperature control of electronic components. 4 Pin Fan80mm PWM fan support intelligent speed regulation, that is, when a certain temperature is reached, the speed will be increased. You can enter the BIOS to set the trigger temperature. Fan percentage operation can be set. 80mm Fan 80 x 80 x 25 mm ( 3.15 x 3.15 x 1 in. )