We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
MSI MAG Z390M MORTAR micro-ATX motherboard in black with silver heatsinks

MSI

MSI MAG Z390M MORTAR Intel motherboard DDR4 128GB

SKU CH-8ZH4-Y4RSB

Micro-ATX Intel Z390 board for 8th and 9th Gen Core CPUs with dual-channel DDR4 up to 128 GB

  • CPU Socket TypeLGA 1151
  • CPU Type8th/9th Gen Intel Core ™/Pentium Gold and Celeron processors
  • ChipsetIntel Z390
  • Memory StandardSupports dual-channel DDR4 4400MHz memory
  • Maximum Memory Supported128GB
  • PCI Slots2 PCIe 3.0 x16 slots (supports x16/x4 modes) 1 PCIe 3.0 x1 s
  • Supports 8th and 9th Gen Intel Core processors via LGA 1151 socket
  • Dual-channel DDR4 memory up to 4400 MHz and 128 GB capacity
  • Two PCIe 3.0 x16 slots plus one x1 slot for expansion cards
  • Intel I219-V Gigabit LAN with Realtek ALC892 7.1 channel audio
  • Micro ATX form factor measuring 23.6 by 20.0 cm

Z390 micro-ATX for 8th and 9th Gen Intel

The MSI MAG Z390M MORTAR uses the Intel Z390 chipset and an LGA 1151 socket to support 8th and 9th Generation Intel Core, Pentium Gold and Celeron processors in a compact micro-ATX form factor. Dual-channel DDR4 memory runs up to 4400MHz with a maximum capacity of 128GB. A single Intel I219-V Gigabit LAN controller handles wired networking.

Sustained load behaviour with extended heatsink

Extended heatsinks on the VRM and chipset increase surface area so heat dissipates steadily during long sessions rather than spiking in short bursts. The Realtek ALC892 codec delivers 7.1 channel audio with S/PDIF output that remains clean under continuous playback. Steel-armoured PCIe 3.0 x16 slots retain heavy graphics cards without flex that can stress solder joints over time.

Practical limits of the Z390 platform

The board provides three M.2 interfaces and four SATA III ports for storage, though the single E-key M.2 slot accepts only Intel CNVi wireless modules. Rear I/O includes one USB 3.1 Gen2 Type-C, one USB 3.1 Gen2 Type-A and two USB 3.1 Gen1 ports, while an internal USB 3.1 Gen2 Type-C header adds front-panel connectivity. PCIe 3.0 x16 slots operate in x16 or x4 modes depending on population.

Highlights

  • Supports 8th and 9th Gen Intel Core processors via LGA 1151 socket
  • Dual-channel DDR4 memory up to 4400 MHz and 128 GB capacity
  • Two PCIe 3.0 x16 slots plus one x1 slot for expansion cards
  • Intel I219-V Gigabit LAN with Realtek ALC892 7.1 channel audio
  • Micro ATX form factor measuring 23.6 by 20.0 cm

Specifications

BrandMSI
SeriesMSI MAG Z390M MORTAR
ModelMSI MAG Z390M MORTAR
CPU Socket TypeLGA 1151
CPU Type8th/9th Gen Intel Core ™/Pentium Gold and Celeron processors with LGA1151 pin support
ChipsetIntel Z390
Memory StandardSupports dual-channel DDR4 4400MHz memory
Maximum Memory Supported128GB
PCI Slots2 PCIe 3.0 x16 slots (supports x16/x4 modes)
1 PCIe 3.0 x1 slot
1 M.2 slot (E key) for installing Intel CNVi wireless modules only
SATA RAID3xM.2 interface, 4xSATA III interface
Audio ChipsetRealtek ALC892 decoding chip
7.1 channel high-quality sound effects
Supports S/PDIF output
LAN Chipset1 Intel I219-V Gigabit network interface card
Onboard USBNtel Z390 chipset
3 USB 3.1 Gen2 (SuperSpeed USB 10Gbps) ports (1 Type-C port and 1 Type-A port on the backplane, 1 onboard USB Type-C port)
2 USB 3.1 Gen1 (SuperSpeed USB) ports are provided via the onboard USB port
8 USB 2.0 (High-speed USB) ports (4 Type-A ports on the backplane, 4 ports provided via onboard USB ports)

Questions about this item

How hot and loud does the Z390 chipset and VRM area run when the board powers a 9th Gen Intel Core processor all day?

The Z390 chipset and VRM heatsinks are passively cooled, so noise stays at zero; sustained loads will raise their temperature but the board has no active fan to create sound.

Which DDR4 memory kit must I already own to reach the advertised 128 GB capacity?

You need four DDR4 DIMMs rated up to 4400 MHz; the board runs dual-channel and supports a maximum of 128 GB across its four slots.

Will my existing SATA SSDs and Intel CNVi wireless module plug straight into this Micro-ATX board?

Yes — four SATA III ports and one M.2 E-key slot accept standard SATA drives and Intel CNVi Wi-Fi cards respectively.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.