That is both added cost and your still missing cooling the underside of the SOC. Most people will not take steps like that, so you end up with boards clocked at

That is both added cost and your still missing cooling the underside of the SOC. Most people will not take steps like that, so you end up with boards clocked at 900mhz instead of 1200mhz cause groups like Armbian don't want to burn up the SOC on users boards that don't have a heatsink. Other bad moves are dumping 1.3v or 1.4v into the SOC and not allowing the user to adjust that voltage, cause then the board is just generating heat needlessly instead of running at 1.1v or so.