Case Fans

Fans are judged on size, static pressure versus airflow, noise, and whether they plug into a proprietary controller. The two sizes here, 120mm and 140mm, aren't interchangeable — pick what your case and radiator mounts accept, with 140mm generally moving more air at lower RPM. Reference-grade airflow/pressure fans (Noctua NF-A12x25 and NF-A14 G2, Phanteks T30, be quiet! Silent Wings 4) suit radiators and restrictive front panels where pressure matters; cheaper multipacks (Thermalright TL-C12C-S, Arctic P14 PST) cover open intake duty well.

The other real fork is the ecosystem. Daisy-chain RGB systems (Lian Li UNI FAN SL120 V2 and SL-INF, Corsair iCUE LINK RX120) bundle a hub or controller and lock you into that platform's connectors and software — convenient for clean cabling, but a commitment. Standard PWM fans (Noctua, be quiet!, Arctic) just need motherboard headers and stay vendor-neutral.

Decide first whether a given spot is intake, exhaust, or on a radiator — that tells you airflow versus static-pressure design — and whether you want plain PWM or a controller-based RGB ecosystem. Buy in the size your mounts support. Rankings here are built from sourced specs, not hands-on testing.