So far I added a 80mm intake fan in my lower left sidepanel, an Alpha PEP66T on the CPU, a 40mm fan on the GPU, and the PSU fan was exhausting everything out, now was it? The other day when I cleaned my case I noticed that my PSU housing did not have any openings in the bottom. Only a small grill on the rear that's blocked half by large capacitors and coils. The PCB-board inside the PSU is mounted upside down so the bottom of the casing is completely free. What I did was cut a hole the size of a 80mm fan in the bottom directly above the Alpha. This clearly gave the PSU fan much more airflow. I also reversed the fan on the Alpha (to suck air out like they advise anyway) so now the hot air from the Alpha is directly sucked upwards into the PSU and outwards. I started looking into this cuz it's warm here, at the moment around 85F, and my rig is in the attick with no airconditioning getting hotter and hotter. After this mod my full load CPU temps dropped from 45-47C to 41-42C. Pretty nice for cutting a hole in a shroud huh?!