Firstly, the optimal temperature for water cooling and heat dissipation is not the lower the better. Secondly, there are three important conditions that determine the performance of the entire water cooling system:

1. The thermal conductivity of the thermal conductive material (determined by the material of components such as the cold head and cold row);

2. Contact area of thermal conductive surface (determined by the number of cold head water channels and cold row thickness);

3. Temperature difference (mainly determined by room temperature, number of cold exchangers, and water pump flow rate).

The product of these three conditions is the heat dissipation per unit time of the entire water cooling system. It can be seen that the size of the water pump flow only involves the temperature difference, but the temperature difference is not solely determined by the water pump flow rate. In a water-cooled system, the optimal temperature difference is the temperature difference between the core temperature and the room temperature. After reaching this difference, increasing the water pump flow rate will indeed have a certain improvement, but it is negligible for the performance of the entire system. And it is already the best water pump in computer systems with a maximum power supply voltage of 12VDC40M, and it is very quiet. For high-power pumps, first you need to adjust your power supply voltage. Secondly, an increase in flow rate will lead to an increase in the pressure on the inner wall of the entire system, reducing its service life and increasing operational risks. So a high-power pump is unnecessary.