MSI B450 Tomahawk Max Ryzen 7 3700x RX 5700

macOS version: 10.15.1 – 11.2

OpenCore version0.6.5

BIOS version7C02v3A2 (Beta)


Component Model
CPU Ryzen 7 3700x
Motherboard MSI B450 Tomahawk Max
GPU XFX RX 5700 XT Thicc III
RAM Gskill Ripjaws 2x16GB 3200Mhz
OS Disk (SSD) PNY CS3030
LAN CHIPSET Realtek 8111H
CASE Corsair Corbide 270R

What works

  • Hardware Accelerated Encode/Decode (Amazon / Netflix / Hulu)
  • Ethernet
  • Audio
  • USB Ports
  • CPU Power Management
  • FileVault
  • Sleep (macOS 11.0+)
  • iServices


  • Partially-working virtualization (only VirtualBox & Parallels Dekstop 13.1.0 or below)
  • Not working 3.5mm Jack microphone (works with VoodooHDA, though audio quality is noticeably worse)

How to use

This repository is primarily meant to be used as a reference. It is advised to follow the official guide, that in details explains the process of creating a bootable USB to installing macOS and finally fixing issues that have occurred during or post-install phase.

In case one may not want to spend time following the guide, one may proceed as follows:

  1. Create bootable USB.
  2. Clone this repository, copy and paste “EFI” directory onto your USB drive.
  3. Generate SMBIOS for MacPro7,1 and fix ROM.
  4. Set BIOS settings according to the guide.
  5. Install macOS.


MSI B450 Tomahawk Max  Ryzen 7 3700x RX 5700

Fixing Memory Errors

CustomMemory.plist is included, but is disabled by default. It is advised to follow the official docs to remove the error.

Ports populated in current build: DIMMA2 and DIMMB2 as specified in official manual by MSI.

Current Values:

  • DataWidth: 64 bits
  • ErrorCorrection: 3 (None)
  • FormFactor: 9 (DIMM)
  • MaxCapacity: 137438953472 (128 GB)
  • TotalWidth: 64 bits
  • Type: 26 (DDR4)
  • TypeDetail: 16512 (Synchronous Unbuffered (Unregistered))

Other Guides

In case you are experiencing issues during installation or boot, kernel panics or another system related issues — check OC configuration guide

If you have any other questions or issues, feel free to ask on AMD-OSX Discord or Forum

Fix Application Crashes