A custom version of the roughly 12 cm cube Kubb Fanless mini PC has been built with a chassis made from solid 24-karat gold rather than gold plating. The standard model weighs about 2.1 kg, while the gold version reaches about 13 kg and costs roughly $1.7 million.

Because the fanless PC uses its chassis as a heatsink, gold's high thermal conductivity does provide a cooling benefit. GIGAZINE notes, however, that copper and silver conduct heat even better, so gold is not the optimal material if cooling alone is the goal.