. I ran the PassMark BurnIn Max Heat test and my temperatures went up to 85C after about 20 minutes. How hot is too hot?
I think >75c is too hot.
Run prime95 and select the option to check for rounding errors. When the overclock starts to fail, you will see rounding errors. If you run clean, I think you are good to go for normal work. While running the test, use cpu-z to verify that your multiplier and clock rate is not being reduced to protect the cpu from itself.