Please mention that newer SMT32H750 boards support 480MHz CPU clock

https://stm32-base.org/boards/STM32H750VBT6-STM32H7XX-M. The newer version of the board mentioned on this page (probably any board bought recently) supports 480MHz CPU clock. You can distinguish them by letter (revision) "V". Please read for more details: https://www.eevblog.com/forum/microcontrollers/stm32h7-series-revision-beware-of-the-changes!/.