MSI MAG X870E TOMAHAWK MAX WIFI PZ AMD motherboard & Ryzen 9 9900X CPU combo
- AM5
- AMD X870E
MSI
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 +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.
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.
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.
| Brand | MSI |
|---|---|
| Model | MAG X870E GAMING PLUS MAX WIFI+9 9900X3D |
| Part Number | MAG X870E GAMING PLUS MAX WIFI+9 9900X3D |
| CPU Socket Type | AM5 |
| CPU Type | Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors |
| Chipset | AMD X870E |
| Number of Memory Slots | 4x DDR5 UDIMM |
| Memory Standard | Memory 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 Supported | 256GB |
| Channel Supported | Dual Channel |
| ECC Supported | Non-ECC |
| Buffer Supported | Un-buffered |
| PCI Express 5.0 x16 | PCI_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 x16 | 1 x PCI Express 4.0 x16 |
| PCI Express 3.0 x16 | 0 x PCI Express 3.0 x16 |
| PCI Express x16 | 2 x PCI Express x16 |
| PCI Express x1 | 1 x PCI Express x1 |
| Serial ATA (SATA) | 4x SATA 6G |
| M.2 | 3 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 Chipset | Realtek ALC897 |
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek 8126VB |
| Max LAN Speed | 5Gbps |
| Bluetooth | Yes |
| Back I/O Ports | 4 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 |
| HDMI | 1 x HDMI |
| DisplayPort | 1 x DisplayPort |
| Onboard USB | 1 x USB Type-C header, with USB 3.2 Gen 2x2 + 4 x USB 3.2 + 6 x USB 2.0 |
| Other Connectors | 1x 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 Factor | ATX |
| LED Lighting | None RGB |
| Dimensions (W x L) | 243.84mm x 304.8mm |
| Windows 11 | Supported |
| Features | 4x EZ Debug LED 1x EZ Memory Detection LED |
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Yes, the board supports JEDEC DDR5-5600 out of the box, so modules rated at 5600 MT/s will operate at that speed automatically.
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.
Standard Cat 6a or better Ethernet cable is sufficient for the 5 Gbps LAN controller; no proprietary cabling is needed.
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