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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

  • ProcessorSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processo
  • ChipsetAMD X870E
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memory4x DDR5 UDIMM, Maximum Memory Capacity 256 GB Memory Support

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.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $1,081.99
Pricier than about 90% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMAG X870E TOMAHAWK WIFI+R9 9900 × 3D
Model nameMAG X870E TOMAHAWK WIFI+R9 9900 × 3D
Part numberMAG X870E TOMAHAWK WIFI
Processor
ProcessorSupports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors
Socket AM5
CPU socketAM5
ChipsetAMD X870E
Memory
Memory slot count4 × 288pin (DDR5)
Supported memory4x DDR5 UDIMM, Maximum Memory Capacity 256 GB
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
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportNon-ECC
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots4x 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 & video
Sound channelsRealtek® ALC4080 Codec
7.1-Channel USB High Performance Audio
Supports up to 32-bit/384 kHz playback on front panel
Supports S/PDIF output
Connectivity
Maximum network speed1x Realtek® 8126 5G LAN
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express 5.0 x16
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
Size & build
Form factorATX
Width and length243.84mmx304.8 mm
Compatibility
Windows 11 supportSupport for Windows® 11 64-bit

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