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ATX motherboard with silver heatsinks and black PCB, Ryzen 9 9900X3D CPU in AM5 socket

MSI

MSI MAG X870E TOMAHAWK WIFI + Ryzen 9 9900X3D Combo

SKU CH-8BKV-YAKK3

AM5 motherboard and Ryzen 9 9900X3D CPU combo with X870E chipset, DDR5 8400 MT/s support, PCIe 5.0, Wi-Fi 7, 5G LAN and USB 40G

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processo
  • ChipsetAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Memory Standard4x DDR5 UDIMM, Maximum Memory Capacity 256GB Memory Support
  • Maximum Memory Supported256GB

CPU +Ryzen 9 9900X3D

  • Ready for next-gen performance with the Ryzen 9 9900X3D 12-core CPU
  • Massive 128 MB L3 cache accelerates gaming and heavy workloads
  • DDR5 memory scales to 8400 MT/s overclocked for high bandwidth
  • Wi-Fi 7 with 320 MHz channels delivers up to 5.8 Gbps wireless speed
  • Tool-less EZ M.2 Shield Frozr II simplifies SSD installation and cooling

Combo motherboard and processor

This bundle pairs an AMD X870E chipset board with a Ryzen 9 9900X3D processor on the AM5 socket. Four DDR5 slots accept up to 256GB of memory running at JEDEC 5600 MT/s or overclocked to 8400 MT/s. The package includes Wi-Fi 7, 5G LAN, a USB 40G port and four M.2 sockets for high-speed storage.

Enthusiast builds needing maximum cache

The 128MB L3 cache on the 12-core CPU targets gaming workloads that benefit from extra cache. Builders who do not need that cache depth or who prefer a lower-power processor should consider other AM5 options. The board also supports Ryzen 7000 and 8000 series chips for future upgrade flexibility.

128MB L3 cache decides fit

The single specification that determines whether this combo matches a build is the 128MB L3 cache on the included Ryzen 9 9900X3D. If the workload scales with that cache amount the combination is appropriate; if not, a different processor makes more sense.

Highlights

  • Ready for next-gen performance with the Ryzen 9 9900X3D 12-core CPU
  • Massive 128 MB L3 cache accelerates gaming and heavy workloads
  • DDR5 memory scales to 8400 MT/s overclocked for high bandwidth
  • Wi-Fi 7 with 320 MHz channels delivers up to 5.8 Gbps wireless speed
  • Tool-less EZ M.2 Shield Frozr II simplifies SSD installation and cooling

Specifications

BrandMSI
SeriesMAG X870E TOMAHAWK WIFI+R9 9900X3D
ModelMAG X870E TOMAHAWK WIFI+R9 9900X3D
Part NumberMAG X870E TOMAHAWK WIFI
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
ChipsetAMD X870E
Number of Memory Slots4x288pin (DDR5)
Memory Standard4x DDR5 UDIMM, Maximum Memory Capacity 256GB
Memory 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*
* CUDIMM support and POR boot frequency may vary by CPU series, with manual
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x161 x PCI Express 3.0 x16
Serial ATA (SATA)4 x SATA 6Gb/s
M.24x M.2
M.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 x4 , supports 2280/2260 devices
M.2_4 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
4x SATA 6G
M.2_1 slot (From CPU)
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
• Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors)
M.2_2 slot (From CPU)
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series proc
Audio ChannelsRealtek® ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384kHz playback on front panel
Supports S/PDIF output
Max LAN Speed1x Realtek® 8126 5G LAN
Wireless LANWi-Fi 7
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8Gbps
Supports 802.11 a/ b/ g/ n/ ac/ ax/ be
Supports Bluetooth® 5.4**, MLO, 4KQAM
* 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 version 24H2.
** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2.
Back I/O PortsClear CMOS Button
USB 10Gbps Type-A
USB 5Gbps Type-A
USB 2.0
5G LAN
Wi-Fi / Bluetooth
Audio connectors
Flash BIOS Button
HDMI™
USB 40Gbps Type-C
USB 10Gbps Type-C
USB 10Gbps Type-A
Other Connectors1x Power Connector(ATX_PWR)
2x Power Connector(CPU_PWR)
1x Power Connector(PCIE_PWR 8pin)
1x Front Type-C Quick Charge Connector(PD_PWR1)
1x CPU Fan
1x Combo Fan (Pump_Sys Fan)
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 LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
4x USB 5Gbps Type A ports
1x USB 20Gbps Type C ports
Form FactorATX
Dimensions (W x L)243.84mmx304.8mm
Windows 11Support for Windows® 11 64-bit
FeaturesSupports AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
Supports DDR5 Memory, Dual Channel DDR5 8400+ MT/s (OC)
Ultra Performance: 14+2+1 Duet Rail Power System, dual 8-pin CPU power connectors, Core Boost, Memory Boost, 8-layer PCB made by 2oz thickened copper and server-grade level material
Frozr Guard: Extended Heatsink, MOSFET thermal pads rated for 7W/mK, additional choke thermal pads and EZ M.2 Shield Frozr II are built for high performance system and non-stop experience
EZ DIY: EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Release and EZ Antenna
Lightning Fast Game

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