CPU_FAN and CPU_OPT are entirely different and serve distinct purposes in the context of a computer cooling system. CPU_FAN or CPU Fan Header is the primary 4-pin fan header on a motherboard, and it ...

Tweaking a PC's BIOS to set a custom fan curve has been shown to deliver up to a 7% performance gain without changing hardware. By adjusting fan speeds to ramp more aggressively with temperature, ...