Quote Originally Posted by Freaky Freezer View Post
Martin, when you say air, is that the air going into the case? Which would be room temperature. Or do you mean the air that blows over the radiators? Which could also be the temperature of the air inside the case.
Ultimately, it's the temperature of the air that's actually entering the radiator. If the air first heats up from entering the case, that will directly affect your water temperature.