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MSI MAG B850 TOMAHAWK MAX WIFI motherboard and Ryzen 7 9700X CPU in anti-static packaging

MSI

MSI MAG B850 TOMAHAWK MAX WIFI AMD motherboard with Ryzen 7 9700X CPU combo

SKU CH-8DZS-23T64

A motherboard and CPU combo with AM5 socket, DDR5 up to 8400 MT/s, PCIe 5.0 x16, M.2 Gen5, Wi-Fi 7, 5G LAN, and an 8-core 16-thread Ryzen 7 9700X processor

  • CPU Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to DDR5 8400+ MT/s (OC)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • Ready-to-build combo with Ryzen 7 9700X CPU included
  • 8 cores and 16 threads reach 5.5 GHz max boost
  • DDR5 memory scales to 8400 MT/s overclocked
  • PCIe 5.0 x16 and Gen5 M.2 deliver 128 GB/s bandwidth
  • Wi-Fi 7 320 MHz channel plus 5 Gbps LAN for fast networking

Combo for AM5 builders

This bundle pairs a MAG B850 TOMAHAWK MAX WIFI board with a Ryzen 7 9700X processor. The CPU delivers 8 cores and 16 threads on Zen 5 architecture with a 5.5 GHz max boost and 40 MB cache. The board supports Ryzen 7000, 8000 and 9000 series chips on the AM5 socket. It targets gamers and creators who want a ready-matched platform.

EZ install extras change the build flow

EZ PCIe Release lets you unlock the graphics-card slot with one press. EZ M.2 Shield Frozr II removes the need for tools when fitting M.2 drives in 22110, 2280 or 2260 sizes. Wi-Fi 7 adds a 320 MHz channel for up to 5.8 Gbps throughput. The 5 Gbps LAN and Audio Boost 5 with Realtek ALC4080 complete the I/O set.

Straightforward install with one BIOS trade-off

The AM5 socket and tool-less M.2 shields keep assembly simple. Four DDR5 slots accept up to 256 GB at 8400 MT/s OC with Ryzen 9000 series. PCIe 5.0 x16 comes from the CPU. Note that using the chipset M.2 slot at Gen 4 x2 forces the third PCIe slot to x2 speed unless you disable that M.2 slot in BIOS.

Highlights

  • Ready-to-build combo with Ryzen 7 9700X CPU included
  • 8 cores and 16 threads reach 5.5 GHz max boost
  • DDR5 memory scales to 8400 MT/s overclocked
  • PCIe 5.0 x16 and Gen5 M.2 deliver 128 GB/s bandwidth
  • Wi-Fi 7 320 MHz channel plus 5 Gbps LAN for fast networking

Specifications

BrandMSI
ModelMAG B850 TOMAHAWK MAX WIFI+R7 9700X
CPU Socket TypeAM5
ChipsetAMD B850
Number of Memory Slots4x288pin (DDR5)
Memory StandardUp to DDR5 8400+ MT/s (OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Memory FeatureMemory Support DDR5 8400 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s
Ryzen 9000 Series Processors max. overclocking frequency:
- 1DPC 1R Max speed up to 8400+ MT/s
- 1DPC 2R Max speed up to 6400+ MT/s
- 2DPC 1R Max speed up to 6400+ MT/s
- 2DPC 2R Max speed up to 4800+ MT/s
Supports AMD POR Speed and JEDEC Speed
Supports Memory Overclocking and AMD EXPO
Supports Dual-Channel mode
Supports Non-ECC, Un-buffered memory
Supports CUDIMM, Clock Driver bypass mode only
PCI Express 5.0 x16PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)
PCI Express x4PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset)
*PCI_E3 slot will run at x2 speed when installing device in the M2_3 slot. You can switch PCI_E3 slot to x4 in the BIOS, but this will disable the M2_3 slot
PCI Express x1PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 22110/2280 devices
M.2_2 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices
M.2_3 Source (From Chipset) supports up to PCIe 4.0 x2 , supports 2280/2260 devices
M.2_4 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
*PCI_E3 slot will run at x2 speed when installing device in the M2_3 slot. You can switch PCI_E3 slot to x4 in the BIOS, but this will disable the M2_3 slot.
** Please refer to the manual for M.2 SSD heatsink restrictions
SATA RAIDSupports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices
Audio ChipsetRealtek ALC4080
Audio Channels7.1 Channels
LAN ChipsetRealtek 8126VB
Max LAN Speed5Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Onboard USB4 x USB 2.0 ports
4 x USB 5Gbps Type A ports
1 x USB 20Gbps Type C ports
Other Connectors1 x CPU Fan
1 x Combo Fan (Pump_Sys Fan)
6 x System Fan
1 x EZ Conn-header (JAF_2)
2 x Front Panel (JFP)
1 x Chassis Intrusion (JCI)
1 x Front Audio (JAUD)
3 x Addressable V2 RGB LED connector (JARGB_V2)
1 x RGB LED connector(JRGB)
1 x TPM pin header(Support TPM 2.0)
Form FactorATX
LED Lighting4 x EZ Debug LED
1 x EZ Memory Detection LED
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x Power Connector(ATX_PWR)
2 x Power Connector(CPU_PWR)
1 x Power Connector(PCIE_PWR 8pin)
Windows 11Windows 11 64-bit

Questions about this item

Will the 80A SPS VRM require any maintenance or replacement under normal use?

The VRM is a solid-state power delivery component with no moving parts, so it does not need scheduled maintenance or periodic replacement.

What thermal limit appears first when the Ryzen 7 9700X runs at its 5.5 GHz max boost clock all day?

The CPU will hit its own thermal ceiling before the motherboard VRM or chipset become the limiting factor under sustained load.

How loud and hot does the board get when the 5G LAN and Wi-Fi 7 run continuously?

The LAN and Wi-Fi controllers are low-power chips that add minimal heat; system noise and temperature will be dictated by the CPU cooler and case airflow.

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