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ATX motherboard in black with silver heatsinks, paired with Ryzen 9 9900X3D CPU in grey and silver

MSI

MSI MAG X870E GAMING PLUS MAX WIFI & Ryzen 9 9900X3D combo

SKU CH-5Y34-WV5AP

AM5 motherboard and Ryzen 9 9900X3D CPU bundle with DDR5 up to 8200 MT/s, PCIe 5.0 graphics and M.2, Wi-Fi 7, 5G LAN and tool-less EZ M.2 Shield Frozr II

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processor
  • ChipsetAMD X870E
  • Number of Memory Slots4x DDR5 UDIMM
  • Memory StandardMemory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JED
  • Maximum Memory Supported256GB

CPU +Ryzen 9 9900X3D

  • Supports up to 256GB DDR5 memory for large workloads
  • PCIe 5.0 x16 slot delivers 128GB/s bandwidth for modern GPUs
  • 5G LAN and Wi-Fi 7 with 320MHz channel reach 5.8Gbps wireless speed
  • Tool-free EZ M.2 Shield Frozr II simplifies installation of three M.2 drives
  • 64MB BIOS ROM enables compatibility with future Ryzen CPU upgrades

AM5 Platform with Ryzen 9 9900X3D

This combo pairs the MAG X870E GAMING PLUS MAX WIFI motherboard with the AMD Ryzen 9 9900X3D processor. It targets enthusiasts building a high-performance desktop around the AM5 socket. The board supports Ryzen 9000, 8000 and 7000 series CPUs and delivers dual-channel DDR5 memory architecture.

Sustained Load Behaviour

The extended PWM heatsink design helps the voltage regulators stay cool during prolonged heavy workloads, allowing the 9900X3D to maintain high frequencies. The OC Engine clock generator assists stable operation when the CPU is pushed continuously. Three M.2 slots include Shield Frozr cooling to keep Gen5 and Gen4 storage from throttling under sustained transfers.

Compatibility Checklist

Verify your chassis fits an ATX board and provides clearance for the extended heatsink. Ensure the power supply has sufficient 8-pin CPU connectors for the 9900X3D. Confirm DDR5 modules match the supported speeds — up to 8200 MT/s OC with one DIMM per channel or 6400 MT/s with two per channel. Check that your GPU and M.2 drives align with the PCIe 5.0 x16 and Gen5 M.2 slot layouts.

Pontos fortes

  • Supports up to 256GB DDR5 memory for large workloads
  • PCIe 5.0 x16 slot delivers 128GB/s bandwidth for modern GPUs
  • 5G LAN and Wi-Fi 7 with 320MHz channel reach 5.8Gbps wireless speed
  • Tool-free EZ M.2 Shield Frozr II simplifies installation of three M.2 drives
  • 64MB BIOS ROM enables compatibility with future Ryzen CPU upgrades

Especificações

BrandMSI
ModelMAG X870E GAMING PLUS MAX WIFI+9 9900X3D
Part NumberMAG X870E GAMING PLUS MAX WIFI+9 9900X3D
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors
ChipsetAMD X870E
Number of Memory Slots4x DDR5 UDIMM
Memory StandardMemory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s
Ryzen 9000 Series Processors max. overclocking frequency:
1DPC 1R Max speed up to 8200+ 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 6000+ 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 overclocking available after boot. Certain CPUs may fail
Maximum Memory Supported256GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 5.0 x16PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU)
PCI_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)
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x160 x PCI Express 3.0 x16
PCI Express x162 x PCI Express x16
PCI Express x11 x PCI Express x1
Serial ATA (SATA)4x SATA 6G
M.23 x M.2 (Support PCIe 5.0 x4 & PCIe 4.0 x4)
M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices
M.2_2 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 22110/2280 devices
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 4.0 x4 (For Ryzen 9000/ 8700/ 8600/ 8400/ 7000 Series processors)
M.2_3 slot (From CPU)
Supports up to
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetRealtek 8126VB
Max LAN Speed5Gbps
BluetoothYes
Back I/O Ports4 x USB 2.0
2 x USB 5Gbps Type A
2 x USB 10Gbps Type A
1 x USB 20Gbps Type C
1 x USB 40Gbps Type C
1 x HDMI
HDMI1 x HDMI
DisplayPort1 x DisplayPort
Onboard USB1 x USB Type-C header, with USB 3.2 Gen 2x2 + 4 x USB 3.2 + 6 x USB 2.0
Other Connectors1x Power Connector(ATX_PWR)
2x Power Connector(CPU_PWR)
1x Power Connector(PCIE_PWR 8pin)
1x CPU Fan
1x Combo Fan (Pump_Sys Fan)
6x System Fan
1x EZ Conn-header (JAF_1)
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x Tuning Controller connector(JDASH)
3x Addressable V2 RGB LED connector (JARGB_V2)
1x RGB LED connector(JRGB)
1x TPM pin header(Support TPM 2.0)
2x Direct OC Jumper (JBCLK)
Form FactorATX
LED LightingNone RGB
Dimensions (W x L)243.84mm x 304.8mm
Windows 11Supported
Features4x EZ Debug LED
1x EZ Memory Detection LED

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Perguntas sobre este artigo

Will my DDR5-5600 memory run at its rated speed without manual tuning?

Yes, the board supports JEDEC DDR5-5600 out of the box, so modules rated at 5600 MT/s will operate at that speed automatically.

Can I install three M.2 SSDs at once and keep the primary PCIe 5.0 x16 slot running at full speed?

Yes, the three M.2 slots are wired from separate sources — CPU, chipset and chipset — so populating all three does not reduce the primary PCIe 5.0 x16 lane allocation.

Does the 5G LAN port require a special cable to reach its rated throughput?

Standard Cat 6a or better Ethernet cable is sufficient for the 5 Gbps LAN controller; no proprietary cabling is needed.

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