MSI MAG B850 TOMAHAWK MAX WIFI ATX Motherboard

Chipset

AMD B850

CPU

Supports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
Socket AM5

Memory

4x DDR5 UDIMM, Max 256GB
Support DDR5 8400–5600 (OC) MT/s / 5600–4800 (JEDEC) MT/s
Ryzen™ 9000 OC Frequencies:
• 1DPC 1R: up to 8400+ MT/s
• 1DPC 2R: up to 6400+ MT/s
• 2DPC 1R: up to 6400+ MT/s
• 2DPC 2R: up to 6400+ MT/s
Supports AMD POR & JEDEC speeds, AMD EXPO™, Dual-Channel
Non-ECC Un-buffered memory
CUDIMM support (Clock Driver bypass mode only)*

Memory Notes

DIMM slots with double-sided latches
Compatibility varies by CPU & memory configuration (refer to Memory QVL)

Onboard Graphics

1x HDMI™ 2.1 FRL
Max resolution: 8K 60Hz*
*Only available with CPUs featuring integrated graphics

Slot

3x PCI-E x16:
• PCI_E1 (CPU): Gen 5.0 x16
• PCI_E2 (Chipset): Gen 3.0 x1
• PCI_E3 (Chipset): Gen 4.0 x4*
PCI_E1 behavior by CPU:
• Ryzen™ 9000/7000 → PCIe 5.0 x16
• Ryzen™ 8700/8600/8400 → PCIe 4.0 x8
• Ryzen™ 8500/8300 → PCIe 4.0 x4
*PCI_E3 runs at x2 if M2_3 is occupied; can switch to x4 in BIOS but disables M2_3

Audio

Realtek® ALC4080 Codec
7.1-Channel USB High Performance Audio
Up to 32-bit/384kHz playback (front panel)
S/PDIF output

Storage

4x M.2 + 4x SATA 6G
M.2_1 (CPU): PCIe 5.0 x4, 22110/2280
M.2_2 (CPU): PCIe 5.0 x4, 2280/2260
M.2_3 (Chipset): PCIe 4.0 x2, 2280/2260
M.2_4 (Chipset): PCIe 4.0 x4, 2280/2260
M2_1 & M2_2 behavior varies by CPU generation (9000/8000/7000 full support, 8700/8600/8400 limited, 8500/8300 reduced)
M2_3 disabled if PCI_E3 set to x4

RAID

Supports RAID 0, 1, 10 (M.2 NVMe)

USB

Rear: 4x USB 2.0, 1x USB 5Gbps Type-A, 2x USB 10Gbps Type-A, 3x USB 10Gbps Type-C
Front: 4x USB 2.0, 4x USB 5Gbps Type-A, 1x USB 20Gbps Type-C

LAN

Realtek® 8126VB 5G LAN

Internal IO

1x ATX_PWR
2x CPU_PWR
1x PCIE_PWR (8-pin)
1x CPU Fan
1x Combo Fan (Pump/Sys)
6x System Fan
1x EZ Conn-header (JAF_2)
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
3x Addressable V2 RGB (JARGB_V2)
1x RGB (JRGB)
1x TPM (2.0)
4x USB 2.0
4x USB 5Gbps Type-A
1x USB 20Gbps Type-C

Wireless LAN & Bluetooth

Wi-Fi 7 (M.2 Key-E module, pre-installed)
MU-MIMO TX/RX
2.4GHz / 5GHz / 6GHz* (320MHz), up to 5.8Gbps
Supports 802.11 a/b/g/n/ac/ax/be
Bluetooth® 5.4**, MLO, 4KQAM
*6GHz depends on regulations, Wi-Fi 7 available with Windows 11 24H2
**Bluetooth version may be updated by chipset vendor

LED Feature

4x EZ Debug LED
1x EZ Memory Detection LED

Back Panel Ports

Clear CMOS Button
Flash BIOS Button
USB 10Gbps Type-A
USB 5Gbps Type-A
USB 2.0
USB 10Gbps Type-C (x2)
USB 10Gbps Type-A
5G LAN
Wi-Fi / Bluetooth
Audio Connectors
HDMI™

Operating System

Windows® 11 64-bit