What is IMP003 SPI flash speed

At what speed runs the SPI flash memory used by impOS? 7500 kHz?

It’s currently 4.5MHz, to ensure it’s stable (as we don’t do the layout for products and the SPI flash is part of the host design).

We may at some point allow this to be set after boot, though. Is is too fast/too slow for you?

In a test I will verify the clock speed and check signal integrity.
No, not too slow/fast for me.