If you are unsure whether or not to use EXPO/XMP, then knowing that these are myths should dispell some of your fears.
Intel XMP (Extreme Memory Profile) is a technology that lets you overclock your computer's RAM in the BIOS to push the performance further than what's typically allowed straight out of the box.
With the last two AMD processor generations exclusively making use of DDR5 RAM and PCIe 5.0 components, it's of paramount importance that you know how to make your memory perform at its best.