What are the benefits of high input clocks in FDCAN?

Hello, everyone!

I am a user of STM32H753. I was looking at VOS to determine the CLK speed of STM32H753 and suddenly I wondered.

What are the benefits of high system clocks?

What are the benefits of high CAN input clocks? Does CAN operate faster when the input clock is high?

If anyone knows about this, please let me know.

Thanks for the heads up.