The chip itself is 2W TDP – but peak instantaneous power can exceed 6W for seconds, overwhelming tiny heat spreaders.
She posted a warning on that same forum: “Z8300 hot drivers will cook your chip. Use only with active cooling.” intel atom x5z8300 drivers hot
Troubleshooting Intel Atom x5-Z8300: Solving the "Hot" Driver Freeze The chip itself is 2W TDP – but