You are mistaken.
The colder a CPU runs, the better, as conductivity improves as temperature decreases.
In order for you to damage it out of coldness you should cool it enough so it goes into a state of matter called the Bose-Einstein condensate. And that is measured in mK (mili-Kelvins). Not achievable outside a lab. That, or to be stupid enough to use a compressor, and let it condensate water around the CPU block, which will lead to a short circuit.
While true for the most part, modern-day CPU's have a 'cold bug', sometimes occurring at temperatures as 'high' as 0 C, to as low as -100 C. Most CPU's won't work at -150 C, no matter what type of architecture, it just won't go. Of course, that's not the issue here, because I highly doubt the CPU on this server is cooled via phase-change or NO2.
