“Every version” probably means 20-30 MB for each GPU series that can potentially appear in the PCI-e slot after power on (if still supported by the driver). Or

“Every version” probably means 20-30 MB for each GPU series that can potentially appear in the PCI-e slot after power on (if still supported by the driver). Or the user has to juggle the firmware before hardware change (or the driver has to implement the juggling instead).