What Is an AIO Cooler? Liquid Cooling Explained
An AIO cooler is a self-contained, pre-filled liquid cooling system that circulates coolant between a CPU pump block and a case-mounted radiator to reduce processor temperatures. Last updated: June 2026 Quick Answer: What Is an AIO Cooler? AIO stands for All-In-One. An AIO cooler combines a pump, coolant reservoir, tubing, radiator, and fans into a…