Okay so PBO at 200mhz OC on air and am getting over 30k Cinebench and can only get up to 87c max. So I went into 3dsmax and ran a scene render for stays around 83c. I tried using IR and moving the scene around constantly. I was finally able to max at 92.9c after 11 minutes rendering but drops back down to 8.3c and seems to bounce around between 83-92.9c. This scene has a lot of Forest Pro grass and vegetation. Very impressed so far, I think it might be possible to keep an overclock on air. Juraj, I think at this point I would skip the custom cooling, with all the time and maintenance it takes and possible risk. Even though it seems good, I might actually turn PBO back off. It still worries me running in the mid 80's and spiking up to 92.9, so I think I might turn PBO back off.
Okay at 20min rendering now I am at 93.9c, time to turn off PBO.