Cooling & Airflow

PC cooling is the difference between a system that holds boost clocks under sustained load and one that thermal-throttles three minutes into a game. This category covers the full cooling stack: air coolers, AIO liquid coolers, custom open loops, case fans, thermal paste, fan curves, and the airflow patterns that tie everything together. The goal isn’t lowest possible temperatures — it’s stable temperatures matched to your CPU, your GPU, your case, and the workload you actually run. A Ryzen 9 in a 240mm AIO is overkill for office work and underbuilt for sustained rendering. A high-end air cooler can match many AIOs at half the price with none of the failure modes. The articles here include thermal paste reviews with real conductivity numbers, custom loop guides that explain pump and reservoir choice without the cult-of-watercooling marketing, AIO comparisons, and airflow setups for cases that ship with bad fan configurations from the factory. For the parts you’re cooling, see our Hardware Guides when temperatures cross safe ranges, see Troubleshooting.