There are two ways of fix RAM overheating for this miniPC.
First is to switch from 5600 to 4800 MT/s DDR5 RAM modules
Second is to Switch CPU in non turbo mode
Crucial 2x48GB DDR5 5600 modules and CPU in turbo mode
Disable CPU Turbo
switch modules to 4800 and enable Turbo
switch modules to 4800 and enable Turbo
compare performance
