Unfortunately water does not release heat very efficiently. So, to aid in this processes Asetek ships the WaterChill kit with a copper (found under the gloss black paint) two-pass radiator to accelerate the process. With mounts for 120mm fans and the same 1/2" push fittings as the water blocks, water can get in, get cooled and get out in a very short period of time. For our testing purposes only, Asetek shipped the WaterChill Extreme kit with two different radiators; their medium sized radiator which holds two 120mm fans (top radiator) and their new large radiator, found in the retail version of the Extreme kit, which holds a hefty three 120mm fans (bottom radiator). The only draw back to Radiators of this size, is that placement within the case becomes a challenge and will require one to either alter the original state of their computer chassis, or mount the radiator externally.
In the first picture above, you can see the copper between the fins of the radiator. Though the black paint does not help with the expulsion of heat from the radiator, it does make it much more esthetically pleasing and should match many more computer cases. The second picture above displays one of the mounting brackets for the 120mm fans. As you can see their are no threads in the holes, this is because the screw for the fan cuts its own, so, be careful not to strip the hole during installation or else you will end up with a loose fan which may be prone to vibration.
The fans provided with the radiator are 120mm, 12v, brushless fans with seven fins. When installed all of the fans are daisychained together, using the standard 3-pin fan connector, so they can plug into the control unit which was discussed two pages back. Also, for ease of installation, the fans have the direction of blade spin and path of airflow clearly marked by two arrows along the side of each unit. For best cooling, be sure to place the fans in such a way that the air is being pushed through the radiator, not being pulled through from behind.