logic board or CPU in your Mac Pro. board. [ … ] Removing the logic board means you'll need to [guide|744|reapply a layer of thermal compound]. [ … ] '''Before beginning any work on your Mac Pro:''' Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors. [ … ] '''Be very careful''' not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

the logic board or upgrade the CPU Logic Board in your Mac Pro. Pro Late 2013.