You might have read that Microsoft’s upcoming Windows 11 requires a Trusted Platform Module (TPM). More recent AMD CPUs support Firmware TPM (fTPM) which implements TPM in software on the CPU instead of requiring a dedicated (discrete) chip. This is how I enabled fTPM.
Up until a couple of weekends ago, I’d been running my Corsair Vengeance LPX 2x8 GB RAM at 3600 MHz on my ASRock B550M Steel Legend and AMD Ryzen 5 5600X. In fact, I did even better than XMP settings, with a stable system even though I pushed RAM timings by reducing CAS 18 to CAS 16. Then, I upgraded my motherboard BIOS to AMD AGESA AM4 v2 184.108.40.206... and now I can no longer run at 3600 MHz!