What is cpu_opt?

CPU_OPT is a designation commonly used in computer hardware to refer to a specific fan header or connector on a motherboard that is dedicated for controlling the CPU (Central Processing Unit) cooling fan. This header is typically labeled as "CPU_OPT" or "CPU_FAN_OPT" and can usually be found adjacent to the main CPU fan header (often labeled as "CPU_FAN" or "CPU_FAN1").

CPU_OPT headers are designed to provide additional cooling support specifically for the CPU. They are especially useful in high-performance systems or when using advanced cooling solutions such as liquid cooling. The CPU_OPT header allows users to connect an extra fan or cooler to further enhance the cooling capacity around the CPU.

The CPU_OPT header typically has the same functionality as the main CPU fan header, providing features like pulse-width modulation (PWM) control for adjusting fan speed based on CPU temperature. This allows the connected fan to operate at variable speeds, providing optimal cooling performance as required by the CPU's heat output.

It is worth noting that not all motherboards have a specific CPU_OPT header. Some motherboards may provide additional fan headers that can be used for CPU cooling but may be labeled differently (e.g., "CHA_FAN," "SYS_FAN," etc.). In such cases, these alternative headers can still be used to connect an additional CPU cooler.

Overall, CPU_OPT is a convenient feature provided by motherboards to offer additional cooling support for the CPU, allowing users to optimize their system's cooling performance and maintain stable temperatures during intensive computing tasks.