A fan with high static pressure is more effective at forcing air through restricted spaces, such as the gaps between a radiator or heatsink; static pressure is more important than CFM when choosing a fan for use with a heatsink.
A fan with high static pressure is more effective at forcing air through restricted spaces, such as the gaps between a radiator or heatsink. Therefore, enthusiasts often prioritize static pressure over CFM when choosing a fan for use with a heatsink.