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ATX motherboard dark finish metal heatsinks four DDR5 slots multiple M.2 shields I/O cover

MSI

MSI MEG X870E ACE MAX AMD motherboard

SKU CH-RSM8-CJ6ZW MPN MEG X870E ACE MAX

An ATX board for AM5 Ryzen 7000, 8000 and 9000 CPUs with 18+2+1 110A power, 64MB BIOS, four DDR5 slots up to 9000 MT/s, dual PCIe 5.0 x16, five M.2 sockets, USB4, Wi-Fi 7 and 10G LAN

  • CPU Socket TypeAM5
  • ChipsetAMD X870E
  • South BridgeAMD X870E
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 5600
  • Maximum Memory Supported256GB

Option MEG X870E ACE MAX

Struck-through versions exist but are not stocked here.

  • Supports AMD Ryzen 9000, 8000 and 7000 series processors on AM5 socket
  • 18+2+1 DRPS power stages rated at 110A SPS with OC Engine clock generator
  • DDR5 memory up to 9000 MT/s overclocked across four slots with AMD EXPO profiles
  • Two CPU-sourced M.2 slots at PCIe 5.0 x4 plus three chipset M.2 slots at PCIe 4.0 x4
  • Wi-Fi 7, 10G LAN and USB4 connectivity built into the rear I/O panel

Built for AM5 high-end builds

This MSI MEG X870E ACE MAX motherboard targets enthusiasts pairing Ryzen 9000, 8000 or 7000 processors with fast DDR5 memory. The 18+2+1 110A SPS power stage design and 64MB BIOS ROM support heavy overclocking and future CPU updates. Dual PCIe 5.0 x16 slots and two CPU-linked M.2 2280 connectors at PCIe 5.0 x4 give maximum bandwidth for graphics and storage.

Ideal for extreme overclockers, not for compact

The board suits users who need 10G LAN, Wi-Fi 7, USB4 and five M.2 slots (two at PCIe 5.0, three at PCIe 4.0) plus four SATA 6Gb/s ports with RAID 0/1/10. Builders wanting a smaller form factor, fewer expansion slots or a lower-tier chipset should look at other AM5 models instead.

Verify AM5 cooler clearance, DDR5 EXPO kits and

Confirm your CPU cooler fits the dense VRM heatsink layout around the socket. Ensure memory kits are DDR5 EXPO validated for up to 256GB across four 288-pin slots. Check that your chassis accommodates the full ATX footprint and has mounting points for the extensive rear I/O including dual LAN and USB4 ports.

Highlights

  • Supports AMD Ryzen 9000, 8000 and 7000 series processors on AM5 socket
  • 18+2+1 DRPS power stages rated at 110A SPS with OC Engine clock generator
  • DDR5 memory up to 9000 MT/s overclocked across four slots with AMD EXPO profiles
  • Two CPU-sourced M.2 slots at PCIe 5.0 x4 plus three chipset M.2 slots at PCIe 4.0 x4
  • Wi-Fi 7, 10G LAN and USB4 connectivity built into the rear I/O panel

Specifications

BrandMSI
SeriesMEG
CPU Socket TypeAM5
ChipsetAMD X870E
South BridgeAMD X870E
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 5600
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 5.0 x162 x PCI Express 5.0 x16
PCI Express 4.0 x162 x PCI Express 4.0 x16
PCI Express x162 x PCI Express x16
PCI Express x41 x PCI Express x4
Other Slots1 x M.2 (Key-E)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 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 22110/2280 devices
M.2_4 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices
M.2_5 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280 devices
SATA RAID0/1/10
Audio ChipsetRealtek ALC4082
Audio Channels7.1 Channels
LAN ChipsetMarvell AQC113CS, Realtek 8126
Second LAN ChipsetRealtek 8126
Max LAN Speed10Gbps + 5Gbps
Wireless LANWiFi IEEE 802.11 a / b / g / n / ac / ax / be
BluetoothYes
Back I/O Ports9 x USB 10Gbps Type-A, 2 x USB 10Gbps Type-C, 2 x USB 40Gbps Type-C, 1 x HDMI, 1 x 10G LAN, 1 x 5G LAN, 1 x Optical S/PDIF-Out
Video PortsHDMI + 2 x Display Port
S-VideoNo
HDMI1 x HDMI
RJ452 x RJ45
DisplayPort2 x DisplayPort
USB 3.111 x USB 3.1
USB 3.04 x USB 3.0
USB 1.1/2.04 x USB 2.0
USB Type-C2 x USB Type-C® port, with USB 40Gbps support; 2 x USB Type-C® port, with USB 10Gbps support; 1 x USB Type-C® port, with USB 20Gbps support
S/PDIF Out1 x Optical
Audio Ports5 Ports
Onboard USB4 x USB 3.2 + 4 x USB 2.0 + 1 x USB Type-C header, with USB 3.2 Gen 2x2
Form FactorATX
LED LightingRGB
Dimensions (W x L)243.84mm x 304.8mm
Power Pin24 Pin
Windows 11Supported
Shipping weight3.47 kg
Package size356 × 292 × 89 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Which processor must I already own for this AM5 board to work?

A Ryzen 7000, 8000 or 9000 series CPU fits the AM5 socket and is required for the board to function.

Will my PCIe 4.0 graphics card run at full speed in the 5.0 x16 slots?

Yes, the two PCIe 5.0 x16 slots are backward compatible and will operate a PCIe 4.0 card at its native 4.0 bandwidth.

How can I confirm the DDR5 memory is running at the rated EXPO speed after assembly?

Enter the BIOS and verify the memory frequency shows the EXPO profile value, then cross-check with a Windows tool such as Task Manager or CPU-Z.

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