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System Fan

pc

A system fan is an electromechanical device used to cool components within a computer system by expelling hot air or circulating cooler air.

expanded

System fans are critical for maintaining optimal thermal conditions inside personal computer (PC) cases. They primarily function by dissipating heat generated by various components such as the CPU, GPU, and power supply unit, thereby preventing overheating. Proper thermal management afforded by system fans enhances component lifespan and improves the performance of the PC.

examples

A 120 mm (4.72 in) system fan installed to cool a mid-tower PC case with dimensions 210 mm × 450 mm × 460 mm (8.27 in × 17.72 in × 18.11 in).

This system fan is typically deployed in gaming PCs where elevated heat generation occurs due to high-performance components.

92 mm (3.62 in) system fans used in smaller form factor PCs such as home theater PC (HTPC) cases.

These fans are utilized in environments where space constraints demand smaller components without compromising on cooling efficiency.