KB 813945 - AMD EPYC 9554 (100-000000912) Incompatibility with Turin BIOS on ASUS ESC8000A-E13P

KB 813945 - AMD EPYC 9554 (100-000000912) Incompatibility with Turin BIOS on ASUS ESC8000A-E13P

Summary

This article outlines the incompatibility between the AMD EPYC 9554 processor (part number 100-000000912) and BIOS versions optimized for AMD’s EPYC 9005 “Turin” series, specifically on the ASUS ESC8000A-E13P server platform.

Issue Description

Users attempting to deploy the AMD EPYC 9554 CPU on the ASUS ESC8000A-E13P server with a BIOS version tailored for EPYC 9005 (Turin) may experience:

  • System fails to POST
  • CPU not recognized
  • Continuous reboots or hangs during initialization

Root Cause

While both EPYC 9004 (Genoa) and EPYC 9005 (Turin) processors use the SP5 socket, BIOS-level support is not universal. Some Turin-optimized BIOS versions:

  • Remove microcode support for EPYC 9004 CPUs like the 9554
  • Are designed for hardware revisions (e.g., Rev 2) that do not support older CPUs
  • Belong to separate BIOS branches that are not backward-compatible

Resolution

If using AMD EPYC 9554:

  • Do not flash Turin-only BIOS unless explicitly stated to support EPYC 9004.
  • Revert to a Genoa-compatible BIOS version from ASUS support.
  • Verify motherboard revision: Ensure the board is not a Turin-only hardware revision.

If planning to upgrade to EPYC 9005 (Turin):

  • Confirm whether the ESC8000A-E13P unit supports dual-generation BIOS or requires a dedicated firmware path.
  • Maintain separate BIOS profiles for Genoa and Turin deployments if needed.

ASUS ESC8000A-E13P Server Overview

Feature

Specification

Form Factor

4U Rackmount

CPU Support

Dual AMD EPYC 9005 (Turin) processors, up to 500W TDP

Memory

24× DDR5 DIMM slots, 12-channel, up to 6400 MHz

GPU Support

Up to 8× dual-slot GPUs (e.g., NVIDIA H100, RTX 6000 Ada)

Storage

8× 2.5" NVMe hot-swap bays, 2× M.2 Gen5 x4

PCIe Expansion

5× PCIe Gen5 x16 slots for NICs/DPUs

Networking

Compatible with NVIDIA BlueField-3 DPUs, 100GbE NICs

Power Supply

3+1 Redundant 3200W 80 PLUS Titanium

Cooling

5× GPU fans + 5× system fans

Management

ASUS ASMB12-iKVM, ASUS Control Center

Affected Components

Component

Details

CPU

AMD EPYC 9554 (100-000000912), 64-core, Zen 4

BIOS

Turin-optimized firmware (varies by vendor)

Server

ASUS ESC8000A-E13P

Socket

SP5

References