JBX COOLING BLOG PC Airflow & Cooling
PC Cabinet Airflow Guide
Thermals & Cooling • 6 Min Read

PC Airflow 101: Fans & Liquid Cooling Setup

By JBX Tech Experts • Published August 2026

Optimizing Desktop Case Thermals

Proper PC case airflow prevents heat buildup around GPU VRAM and motherboard VRM power phases.

1. Positive Air Pressure (Prevents Dust Buildup)

Configure slightly more intake fan CFM volume (front mesh intake fans) than exhaust fan volume (rear/top exhaust). Positive pressure forces dust outwards through unfiltered mesh gaps.

2. AIO Liquid Cooler Radiator Placement

Mount 240mm or 360mm AIO liquid cooler radiators at the top or front panel with tubes facing downwards to prevent air bubbles from trapping inside the CPU pump block.

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