Cold row can be used with chassis fan at will, and the principle is the same. The water-cooled liquid in the water-cooled pipeline brings heat from the CPU seat to the cold row, and then the fins of the cold row increase the contact area with air, which is beneficial to heat transfer to the air around the fins, and then the fan blows away the air heated by the fins. Under this principle, fans of any size can achieve the purpose, except for 120 cold row 90, which is unsightly in size and has no problem in function. In addition, the ventilation also affects the cooling effect. It's okay to be a little fan. If the speed is high enough, the short board with small fan diameter can make up for it. At the same speed, the ventilation capacity of large diameter fan is greater. High speed usually means more noise (provided that the fan design and technology are similar).

Finally, there is a fixed problem. The holes of the cold row and the fan are corresponding, both of which are 120, but the holes of 90 and 120 cannot be aligned. Only by other methods can it be repaired, which may further damage the overall beauty.