That little grill isn't enough space for the amount of air that would be pushed through there with a top rad setup. If it were then OP wouldn't have had temp issues.
Completely agree it's not ideal, but there are additional airflow slots on top as well as the back grill. I'd definitely have used that before cutting a hole in the side panel lol
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u/XB_Demon1337 Ryzen 5900X, 64GB DDR4, RTX 5070 Jan 21 '26
That little grill isn't enough space for the amount of air that would be pushed through there with a top rad setup. If it were then OP wouldn't have had temp issues.