The North XL ME can support 120 mm radiators in the rear, 360 mm radiators in the top, and up to 420 mm radiators in the front. Note that certain combinations will cause compatibility issues. See further down for more information.
Important: When front mounting a radiator, the maximum GPU length is 413 mm minus the radiator thickness. If using a 30 mm thick radiator, the maximum GPU length is (413 - 30) 383 mm.
The largest combination one can use at the same time is a 120 mm radiator in the rear, a 280 mm in the top, and a 420 mm in the front.
For front mounted 420 radiators, please note below size restrictions:
If installing 2.5" or 3.5" drives, be sure to visit this link for additional information with 360 and 420 mm radiators installed in the front.