Liquid coolers are devices used to dissipate heat from computer components, primarily the CPU and GPU. They use a liquid coolant, typically water, to absorb heat and transfer it away from the components. This method is often more efficient than traditional air cooling, allowing for better performance and quieter operation. The system consists of a pump, radiator, and water blocks. The pump circulates the coolant through the water blocks attached to the CPU or GPU, where it absorbs heat. The heated coolant then flows to the radiator, where it releases the heat into the air, keeping the components at optimal temperatures.