Originally Posted by
Ttaskmaster
I've left my panels off lately, purely because I'm waiting for payday, so I can go get some molex crimps and re-wire my cables. I'm lazy like that.
I'm now watercooled, so that side of things is just fine and dandy. However, the general case cooling is still by airflow and that is notably reduced. Half the front intake airflow is blasting out the big holes in the sides instead of being directed by the panels, for example.
So yeah, you will suffer performance loss, more so if you're cooling with air.
I also find it gets much more dusty than with the panels on, so that ain't helping either!!