ARCTIC PC Fans F8 P8 TC Silent PWM PST CO 80mm 8cm 3/4-Pin Black White Fan

F8 Fans weigh wither 71 or 72 grams. P8 Fans weigh 80.5 to 82 grams. There are two categories of ARCTIC case fans: P-fans and F-fans. While F-fans are used where airflow is required, P-fans work in such a way that they generate high static pressure.