Re:New Raspberry Pi 4 Firmware Lowers Temperature by 3-5°C
by pjc50 on Monday July 01, 2019 @05:31AM
(#20323735)
> New USB controller firmware, apparently. The fact that it can have any effect on the CPU temperature is a little puzzling.
At a guess it's something to do with power management and link idling. Version 0 of the firmware might leave the link up all the time with constant traffic; a later version gets it to power down, and along the way someone has to test and fix all the cases where it fails to power down or back up.
At a guess it's something to do with power management and link idling. Version 0 of the firmware might leave the link up all the time with constant traffic; a later version gets it to power down, and along the way someone has to test and fix all the cases where it fails to power down or back up.