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ATX motherboard with silver heatsinks and black PCB paired with Ryzen 9 9950X3D processor

MSI

MSI MPG X870E EDGE TI WIFI + Ryzen 9 9950X3D AMD motherboard & CPU combo

SKU CH-900W-KB1SF

AM5 motherboard and 16-core Ryzen 9 9950X3D CPU with 128 MB L3 cache, DDR5 to 8400 MT/s, PCIe 5.0 graphics and M.2, 5 Gb LAN and Wi-Fi 7

  • 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 9950X3D

  • Ryzen 9 9950X3D delivers 16 cores with 128 MB L3 cache for heavy workloads
  • X870E chipset enables DDR5 up to 8400 MT/s across four slots for 256 GB capacity
  • PCIe 5.0 x16 slot plus four M.2 sockets support 22110 and 2280 drives at full speed
  • 5G LAN and Wi-Fi 7 with 320 MHz channel provide high-throughput wired and wireless networking
  • Premium thermal design uses 7 W/mK pads, heat-pipe MOSFET heatsink and M.2 Shield Frozr to sustain boost clocks

Socket AM5 platform for high-end builds

This combo pairs an MSI MPG X870E EDGE TI WIFI motherboard with an AMD Ryzen 9 9950X3D processor. The board uses the AMD X870E chipset and AM5 socket, supporting Ryzen 9000, 8000 and 7000 series CPUs. It targets enthusiasts who need maximum compute throughput and fast storage expansion in a standard ATX form factor.

PCIe 5.0 and 5G LAN set the ceiling

The primary PCIe x16 slot runs at PCIe 5.0 x16 with Ryzen 9000 and 7000 series chips, dropping to 4.0 x8 or 4.0 x4 with certain 8000 series models. Two CPU-attached M.2 slots also operate at PCIe 5.0 x4. Networking is capped at 5 GbE via the Realtek 8126 controller, while Wi-Fi 7 adds a 320 MHz channel for wireless throughput.

128 MB L3 cache defines the CPU choice

The Ryzen 9 9950X3D brings 128 MB of L3 cache plus 16 MB L2 on a TSMC 4 nm Zen 5 die rated at 170 W. That cache volume is the decisive spec for workloads sensitive to memory latency, such as compilation, simulation and high-refresh gaming. If your software does not benefit from large last-level cache, a different SKU may offer better value.

Highlights

  • Ryzen 9 9950X3D delivers 16 cores with 128 MB L3 cache for heavy workloads
  • X870E chipset enables DDR5 up to 8400 MT/s across four slots for 256 GB capacity
  • PCIe 5.0 x16 slot plus four M.2 sockets support 22110 and 2280 drives at full speed
  • 5G LAN and Wi-Fi 7 with 320 MHz channel provide high-throughput wired and wireless networking
  • Premium thermal design uses 7 W/mK pads, heat-pipe MOSFET heatsink and M.2 Shield Frozr to sustain boost clocks

Specifications

BrandMSI
SeriesMPG X870E EDGE TI WIFI+R9 9950X3D
ModelMPG X870E EDGE TI WIFI+R9 9950X3D
Part NumberMPG X870E EDGE TI 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 EXPOTM
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 manua
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
PCI SlotsPCI_E1 slot
• Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors)
• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)
• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor)
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
• 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
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors)
• The M2_2 slo
Audio 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
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.
BluetoothYes
Back I/O PortsClear CMOS Button
USB 10Gbps Type-A
USB 2.0
5G LAN
Wi-Fi / Bluetooth
Audio Connectors
Flash BIOS Button
HDMI™
USB 40Gbps Type-C
USB 10Gbps Type-A
USB 10Gbps Type-C
Optical S/PDIF Out
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: Enlarged heatsink with heat-pipe, MOSFET thermal pads rated for 7W/mk, additional choke thermal pads and M.2 Shield Frozr are built for high performance system and non-stop gaming experience
EZ DIY: EZ PCIe Release, EZ M.2 Shield Frozr II, EZ M.2 Clip II and EZ Antenna
Ligh

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Questions about this item

Which memory kit should I pick for the four DDR5 slots on this board?

The board runs four DDR5 UDIMM slots in dual-channel up to 256 GB total. With a Ryzen 9000 CPU you can reach 8400 MT/s overclocked on a single-rank single-DIMM-per-channel setup; JEDEC speeds sit at 5600-4800 MT/s.

What does the 128 MB L3 cache on the 9950X3D actually do in games?

The 128 MB L3 cache on the Ryzen 9 9950X3D acts as a large on-die buffer that keeps hot game data close to the cores, cutting memory latency and lifting minimum frame rates in cache-sensitive titles.

How fast is the 5G LAN port and what limits its real-world throughput?

The Realtek 8126 5G LAN port is capped at 5 Gb/s by the PHY itself; actual throughput will be lower due to protocol overhead, cable quality and switch or router capabilities.

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