An overheated component *should* cause the whole OS to crash, not just one app. "Should" is an iffy word, though.
The problem that I read about applies to the 1650 servers. This one's a 2650.
I'm looking at the temperature probes right now and everything's nice and cool. The hottest items are the CPU's, which are running at 39 and 40 Celsius right now, and configured to log a warning if they hit 70.