Depends on placement of the radiator TBH. If it up and away from the motherboard, (like some cases do) then you could pull it into the case just fine and get decent temps. Some people have enough room in there case to set it up in the top Exhaust hole, which is great for it to Exhaust out. My Setup, to keep good airflow, I had to add a fan for intake in the 5.25" drive bay to get airflow to my Northbridge, and set the radiator to exhaust, then flipped the top exhaust fan to a intake fan. Even doing this, I still get high temps inside my case with the panels on. Personally, I blame it on poor airflow design by the case manufacturers.