This is not something critical, but it is slightly annoying and I would like to better understand why it happens. I have an MSI 870A-G54 motherboard that allows me to unlock an extra two cores on my Phenom processor. When I unlock the cores it runs fine, under a heavy load Speedfan shows a max core temperature for the CPU at 55C which is hot but not too bad. It will shut down at random times.
I then backed it down to just running a 3rd core, and the same problem with the shutdown occurred. I figured it was not an overheating issue, so I replaced my Thermaltake 430w PSU with a Thermaltake 800w PSU; same results.
I don't mind running my Phenom with its stock 2-cores, but when the capability is there I'd like to use the extra two. Does anybody have any insight? I am using the stock fan-cooler that came with my CPU.