420mm Radiators & Accessories

PC components produce a lot of waste heat, and without sufficient cooling will overheat, shutting down or damaging your system. Watercooling provides the ultimate in cooling and aesthetics.

This category contains a huge variety of 420mm radiators. The radiator and associated fans conduct heat out of the coolant and into the surrounding air.

Radiators come in four main sizes, 80/120/140mm for a single fan, 240/280mm for two fans, 360/420mm for three fans and 480/560mm for four fans. The larger the radiator the more heat it can conduct. Large radiators have a side benefit which is that you can use slower and quieter fans. If space permits you boost performance by mounting fans on both sides of the radiator in a push-pull configuration.

Radiators also come in different thicknesses, anywhere from around 25mm up to 60mm. Thicker radiators are theoretically capable of conducting more heat but will require more powerful fans to push air between the radiator’s fins.