When is it better for prefetch buffer to be enable and when is it better for it to be disable?

[waclawek.jan]

There is no reason to switch it on when system frequency is set low enough so that there are 0 waitstates when executing program from FLASH, or when executing program from RAM.

When FLASH waitstates are nonzero, setting prefetch ON increases performance but also slightly increases power consumption.

JW

[Rahma.1]

Thanks