MSI

MSI MAG B850 TOMAHAWK MAX WIFI AM5 ATX MB DDR5 256GB 4xM.2 5GbE WiFi7 (Boxed)

SKU 4991 Brand MSI EAN13 4711377290623
AM5 ATX motherboard w/ AMD B850 chipset, DDR5 to 256GB (8400+MT/s), 4x M.2 (2x PCIe5), 4x SATA3, PCIe5 GPU, 5Gb LAN, Wi-Fi7+BT5.4, Realtek ALC4080 audio, EZ DIY features, black.
Motherboards - CPU Socket AMD AM5
Motherboards - Chipset AMD B850
Motherboards - Form Factor ATX
Motherboards - Memory Type DDR5
Motherboards - Memory Profile Support EXPO
Motherboards - Memory Slots 4
Motherboards - Max Memory Capacity 256 GB
Motherboards - Main Slot PCIe Version PCIe 4.0 PCIe 5.0
Motherboards - Color Black
Motherboards - M.2 Slots 4
Motherboards - SATA Ports 4
Motherboards - USB-C Support Front Panel Type-C header Rear Type-C
Motherboards - RGB Headers 3-pin 5V ARGB 4-pin 12V RGB
Motherboards - Wireless Connectivity Bluetooth WiFi

The MSI MAG B850 TOMAHAWK MAX WIFI is a feature-packed ATX motherboard for AMD Ryzen 7000/8000/9000 series CPUs on AM5 socket. Built on B850 chipset with 17-phase VRM and server-grade 8-layer PCB, it delivers stable power for gaming and productivity builds. Supports up to 256GB DDR5 RAM at 8400+ MT/s (EXPO) across 4 DIMM slots.

Storage options include 4x M.2 slots (2x PCIe 5.0 x4 CPU-direct, 2x PCIe 4.0 chipset) plus 4x SATA3 with RAID 0/1/10. Rear I/O boasts 10x USB (3x Gen2 Type-C 10Gbps, 2x Gen2 Type-A, 1x Gen1, 4x 2.0), HDMI 2.1, 5GbE Realtek LAN, Wi-Fi 7 (Qualcomm FastConnect 7800) with BT 5.4, and Realtek ALC4080 7.1 audio with S/PDIF. Networking excels for high-speed homes.

  • ✅ Dual PCIe 5.0 M.2 + PCIe 5.0 x16 GPU slot
  • ✅ Wi-Fi 7, 5GbE, robust USB array
  • ✅ 3x 5V ARGB + 1x 12V RGB headers
  • ✅ EZ PCIe/M.2 release, integrated I/O shield
  • ✅ Click BIOS X, Flash BIOS button
Processor manufacturerAMD
Processor socketSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Motherboard chipsetAMD B850
Motherboard form factorATX
Product colourBlack
Supported memory typesDDR5-SDRAM
Number of memory slots4
Maximum internal memory256 GB
Supported memory clock speed (max)8400+ MHz (OC)
Number of M.2 (M) slots4
1st M.2 highest PCI Express generation5.0
2nd M.2 highest PCI Express generation5.0
3rd M.2 highest PCI Express generation4.0
4th M.2 highest PCI Express generation4.0
Number of SATA III connectors4
PCI Express x16 (Gen 5.x) slots1
Ethernet interface type5 Gigabit Ethernet
Top Wi-Fi standardWi-Fi 7 (802.11be)
Bluetooth version5.4
Audio chipRealtek ALC4080
Audio output channels7.1 channels
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity3
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity1
USB 2.0 ports quantity4
Number of RGB LED pin headers3 (ARGB 5V) + 1 (RGB 12V)
Width243.8 mm
Depth304.8 mm
VRM Phases17-phase
Wi-Fi ChipQualcomm FastConnect 7800
LAN ChipRealtek RTL8126VB