I have 4 5" fans, fan on my GPU, and liquid cooling on my CPU. The other day when was working on a 4k/6K set of videos, I ran for about 2 hours (I had set the computer settings to a setting that maxed out my gpu @4.4 Ghz) and for the first time ever I had a heat shut down. I went back to my variable CPU clock rates and everything was fine. I really thought my system would say ok on temp, turns out not so much. Any body else run you system at the "rated over clock" and have a heating issue when running for a couple of hours?