The ARCTIC F PRO PWM Series case fans outperform generic case fans thanks to the patented PWM Sharing Technology (PST) – which regulates the speed of up to 5 fans via BIOS by sharing a single PWM signal. With this efficient centralized cooling system, temperature and noise level control are optimized at the same time. The ARCTIC F PRO PWM Series is available in 80mm, 92mm and 120mm.