Every integrated circuit, like any other component, have a working temperature range. The minimum ranges are in the commercial grade (if I did dot forget something), while the military/aersopace grade had the wider one.
In what category falls an CPU, or GPU that we are using in our PCs? I see many people scared (mainly enthusiasts) when their PC is working at 60°C. Looking around, I found some indications on some AMD processors (I have one of these) in which AMD recommends to not reach temperatures above 73°C. Does it means that we are in a grade even lower than the commercial one? Or it is a safety measure?
Are those enthusiasts too much paranoid?