Right off the bat, I'm going to say this case really sucks for cooling. I opted to for a AIO Liquid Cooler for my CPU, hoping I could mount it up top, however, there is no clearance on top nor bottom - there is barely clearance for standard 25mm thick fans on the top, and not even that much on the bottom vents. The only place I mount the Rad was in the front, which gave me headache for airflow...
I opted to orient the case with the window side panel facing up and use the CPU cooler as an exhaust in pull configuration, and a good thing I did because the air gets ridiculously hot when the CPU is under stress. With an overnight Prime95 test, I could literally use the computer as a personal space heater if I pointed the front towards me.
The real problem here is there is little air circulation on the left side (what would be the bottom with normal orientation) where my GPU sits and it becomes a massive hot spot. The area is ventilated, but just lack of airflow. I've only noticed since I started playing GTA V. It doesn't put enough load on the CPU to ramp up the fans as exhaust (Core i5 2500k @ 4GHz), but has a near constant 100% GPU load (EVGA GTX 760 ACX SC). In my old case, which was a dusty PoS, the GPU never got much hotter than 76c as I had my temp target at 75c, and fan noise never got particularly loud with a custom fan profile. However, in the Air 240 case, with those same GPU settings, my GPU has gotten up past 80c with fans screaming. The issue is alleviated when I open the top/Window panel, or if I ramp the manually crank CPU fan speeds, though both have issues. If I remove the top panel, I'm concerned about dust as my room has a lot of dust since I have to keep the room's window open nearly 24/7 because it's always too hot, and if I crank the CPU fan speed, it also cranks the pump as well, and I'm concerned about excessive wear and tear. There is also the noise factor as the Seidon L240 gets excessively noisy at anything above 1200RPM. I usually crank them to 1800RPM to ensure it's pulling out enough exhaust, but then you can easily hear the computer across the room.
As I've mentioned before, there isn't clearance to mount a fan where the GPU sits. In addition, I'm using up all of my fan headers on the mobo. It comes with 4 headers total (CPU 1, CPU 2, Chasis, and Power). I have my two right-side mounted fans as intake using Chassis and Power (<- forces 100% all the time), the pump is on CPU 2, and fans are CPU 1 w/ the included PWM splitter.
Any advice on my hotspot/airflow/noise issue?