You clearly aren't a reader/viewer of GamersNexus case reviews
I guess I should clarify: when I said "up against the glass", I didn't mean literally pushing against it, just being mounted close to it, say <20mm. GN has established quite conclusively that the closer to the glass a fan is mounted, the more airflow is restricted, and installations like that (fans mounted outside of the case frame, behind glass or other solid material with side vents) is pretty much a worst case scenario. It kind of works, but the fans are choked off significantly (as the convoluted and narrow airflow path restricts airflow) and thus perform worse than they could in a more optimal installation. A vented front panel is much better, but of course that's difficult if one wants TG and RGB. I'm just saying you could run your fans slower (for less noise) at the same thermals or the same speed but at lower temperatures by making a small change to the configuration of your case. Just sharing a tip.