= ASUS Pro WS X570-ACE =
== Firmware issues ==
=== BIOS ===
BIOS version 4805 (and possibly older) has broken <code>X2APIC</code> mode, which in turn breaks <code>amd-pstate</code> support.
Other possible config values for <code>APIC</code> are <code>Compatibility</code>, <code>Auto</code> and <code>XAPIC</code>; best results were observed with <code>XAPIC</code>.
This is the error in dmesg when <code>X2APIC</code> is enabled:
<code>
amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled
</code>
=== IPMI ===
The IPMI is half-baked and for the most part unusable in a pure Linux environment, see https://forum.level1techs.com/t/remote-management-on-the-asus-pro-ws-x570-ace-under-linux
== Firmware features ==
=== IOMMU ===
The groups are great, it's a good board for VFIO.
=== ECC Memory ===
As stated on the product page, it works; explicitly enabling in BIOS might be required.
Tested with <code>M391A2K43BB1-CTD</code>.
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