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A black ATX motherboard with silver heatsinks and a boxed Ryzen 9 9950X CPU

MSI

MSI MAG B850 TOMAHAWK MAX WIFI + Ryzen 9 9950X Combo AMD motherboard

SKU CH-VDNN-RMXDT

Pairs an AM5 motherboard with a 16-core Ryzen 9 9950X CPU, delivering DDR5 8400+ MT/s overclocking, PCIe 5.0 x16, Wi-Fi 7 and 5G LAN

  • CPU Socket TypeAM5
  • ChipsetAMD B850
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to DDR5 8400+ MT/s (OC)
  • Maximum Memory Supported256GB
  • Channel SupportedDual Channel
  • Ryzen 9 9950X delivers 16 cores and 32 threads for heavy multi-tasking
  • 80A SPS VRM supplies stable power for sustained high-frequency operation
  • DDR5 memory boost reaches 8400+ MT/s overclocked for faster data throughput
  • PCIe 5.0 x16 and Gen5 M.2 enable 128GB/s bandwidth for graphics and storage
  • Wi-Fi 7 with 320MHz channel plus 5G LAN provides 5.8Gbps wireless and wired speed

Ready AM5 Platform

This bundle pairs the MAG B850 TOMAHAWK MAX WIFI motherboard with a Ryzen 9 9950X processor. The 16-core CPU reaches a 5.7 GHz maximum boost clock and provides 32 processing threads. The board delivers an 80A SPS VRM design built for sustained loads. It targets builders who want a matched set without selecting parts separately.

DDR5 8400 MT/s Ceiling

Four 288-pin slots support dual-channel DDR5 up to 256 GB total capacity. Ryzen 9000 series chips can reach 8400+ MT/s with one single-rank DIMM per channel, while two-rank modules top out near 6400 MT/s. JEDEC operation starts at 4800 MT/s and scales to 5600 MT/s. The memory ceiling decides whether the platform fits high-frequency workloads.

Tool-Free Install Notes

EZ PCIe Release unlocks the graphics card slot with a single press, and EZ M.2 Shield Frozr II secures drives without screws. PCI_E3 drops to x2 speed when M2_3 is populated unless the slot is switched to x4 in BIOS, which disables M2_3. The CPU ships without a cooler, so a separate AM5-compatible solution is required.

Highlights

  • Ryzen 9 9950X delivers 16 cores and 32 threads for heavy multi-tasking
  • 80A SPS VRM supplies stable power for sustained high-frequency operation
  • DDR5 memory boost reaches 8400+ MT/s overclocked for faster data throughput
  • PCIe 5.0 x16 and Gen5 M.2 enable 128GB/s bandwidth for graphics and storage
  • Wi-Fi 7 with 320MHz channel plus 5G LAN provides 5.8Gbps wireless and wired speed

Specifications

BrandMSI
ModelMAG B850 TOMAHAWK MAX WIFI+R9 9950X
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

How does the 5.7 GHz max boost on the Ryzen 9 9950X behave once it is installed in this motherboard?

The processor can reach 5.7 GHz max boost when thermal and power headroom allow, and the 80A SPS VRM on this board is designed to deliver the current needed for sustained high frequencies.

What does PCIe 5.0 x16 from the CPU actually cap at for a graphics card or add-in card?

The primary PCI_E1 slot runs at PCIe 5.0 x16 directly from the Ryzen 9 9950X, providing full 5.0 bandwidth for a GPU; the secondary PCI_E3 slot is PCIe 4.0 x4 from the chipset and drops to x2 if M2_3 is populated.

What physical clearance and mounting points does the board need for the M.2 shields and the PCIe release button?

The board uses a standard ATX layout with four 288-pin DDR5 slots, three M.2 slots (22110/2280/2260) each with tool-less EZ M.2 Shield Frozr II, and an EZ PCIe Release button on the primary x16 slot for graphics-card removal.

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