If you are adding a radiator in the front, remove the radiator thickness from the maximum GPU length. For example, with a 30 mm thick radiator, you would have a maximum GPU length of (450 - 30) 420 mm.
If you are adding a radiator in the front, remove the radiator thickness from the maximum GPU length. For example, with a 30 mm thick radiator, you would have a maximum GPU length of (450 - 30) 420 mm.