Hardware
Show connected monitor information
Find your HDMI connector
ls /sys/class/drm/
Then read the EDID for the HDMI card (e.g. card1-HDMI-A-1)
cat /sys/class/drm/card1-HDMI-A-1/edid | edid-decode
Check USB port speed in Linux
lsusb -vvv |grep -i -B5 -A5 bcdUSB
Compare PSU efficiency
ECC Memory
If you’re on Linux, dmesg containing this is a pretty reliable indication that ECC is working.
EDAC MC0: Giving out device to module amd64_edac