A computer radiator works in much the same way as the radiators you’ll find in homes or other buildings – it functions as the heat transferring middleman between water and air. Simply stated, it is the essential component for taking that unwanted heat from the water that cooled your system to the air where it can dissipate. The necessity and science behind it is simple to understand, but don’t mistake simplicity for a lack of importance! The PC radiator is of the utmost performance as the final ‘handler of heat’ in a system, ensuring the hard work of the rest of the cooling system doesn’t hit a hot roadblock.