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Micro-ATX motherboard in matte black with silver heatsinks and gold audio jacks

MSI

MSI ARSENAL GAMING B360M MORTAR Intel motherboard

SKU CH-3H5T-9TXM7

Micro ATX board for LGA 1151 300 Series CPUs with dual M.2 slots, four SATA 6Gb/s ports and DDR4 memory up to 64 GB

  • CPU Socket TypeLGA 1151 (300 Series)
  • CPU TypeSupports 9th/8th Gen Intel Core / Pentium Gold / Celeron pro
  • ChipsetIntel B360
  • Onboard Video ChipsetSupported only by CPU with integrated graphic:1 x DVI-D port
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardSupports DDR4 2666/ 2400/ 2133 MHz* Please refer to www.msi.
  • Supports 9th and 8th generation Intel Core processors with LGA 1151 socket
  • Four DDR4 slots run dual-channel memory up to 2666 MHz for 64 GB capacity
  • Two M.2 slots accept PCIe 3.0 x4 NVMe drives up to 32 Gb/s with Intel Optane ready
  • Steel-armoured PCIe 3.0 x16 slot protects heavy graphics cards from bending and EMI
  • Intel I219-V LAN and Realtek ALC892 audio deliver 1 Gbps networking and 7.1-channel sound

Socket and generation

This Micro ATX motherboard uses the Intel B360 chipset and an LGA 1151 (300 Series) socket. It accepts 9th and 8th generation Intel Core, Pentium Gold and Celeron processors. The board is not backward compatible with earlier LGA 1151 CPUs.

Sustained thermal behaviour

Extended heatsinks cover the PWM area to dissipate heat during prolonged multi-core workloads. The design keeps an eight-core i7 running at full speed without throttling, so performance remains consistent across long rendering or compilation sessions.

Memory capacity ceiling

Four DDR4 slots support dual-channel kits up to 64 GB at 2666, 2400 or 2133 MHz. This limit decides whether the board fits a workstation build that needs large memory or a mainstream gaming rig that stays at 32 GB.

Highlights

  • Supports 9th and 8th generation Intel Core processors with LGA 1151 socket
  • Four DDR4 slots run dual-channel memory up to 2666 MHz for 64 GB capacity
  • Two M.2 slots accept PCIe 3.0 x4 NVMe drives up to 32 Gb/s with Intel Optane ready
  • Steel-armoured PCIe 3.0 x16 slot protects heavy graphics cards from bending and EMI
  • Intel I219-V LAN and Realtek ALC892 audio deliver 1 Gbps networking and 7.1-channel sound

Specifications

BrandMSI
SeriesARSENAL GAMING
ModelB360M MORTAR
CPU Socket TypeLGA 1151 (300 Series)
CPU TypeSupports 9th/8th Gen Intel Core / Pentium Gold / Celeron processors for LGA 1151 socket* Not backward compatible with older generation of LGA 1151 CPUs
ChipsetIntel B360
Onboard Video ChipsetSupported only by CPU with integrated graphic:1 x DVI-D port, supports a maximum resolution of 1920x1200@60Hz1 x DisplayPort, supports a maximum resolution of 4096x2304@60Hz1 x HDMI port, supports a maximum resolution of 4096x2160@30Hz* No Display support when using the Processor model with suffix "F"
Number of Memory Slots4x288pin (DDR4)
Memory StandardSupports DDR4 2666/ 2400/ 2133 MHz* Please refer to www.msi.com for more information on compatible memory MB_Maximum Memory Supported: 64GB
Maximum Memory Supported64GB
Channel SupportedDual Channel
PCI Express 3.0 x162 x PCIe 3.0 x16 slots (support x16/x4 modes)
PCI Express x12 x PCIe 3.0 x1 slots
Serial ATA (SATA)4 x SATA 6Gb/s
M.22 x M.2 slots (Key M)M2_1 supports up to PCIe 3.0 x4 and SATA 6Gb/s, 2242/2260/2280/22110 storage devices*M2_2 supports up to PCIe 3.0 x4, 2242/2260/2280 storage devices*** SATA2 port will be unavailable when installing SATA M.2 SSD in M2_1 slot.** M2_2 slot will be unavailable when installing a PCIe device in PCI_E4 slot.
Intel Optane ReadySupported on M2_2* Before using Intel Optane memory modules, please ensure that you have updated the drivers and BIOS to the latest version from MSI website.
Audio ChipsetDual Realtek ALC892
Audio Channels7.1-Channel High Definition AudioSupports S/PDIF output
LAN ChipsetIntel I219-V
Max LAN Speed1Gbps
Onboard USB1 x USB 3.1 Gen2 Type-C port1 x USB 3.1 Gen1 connector (supports additional 2 USB 3.1 Gen1 ports)1 x USB 2.0 connector (supports additional 2 USB 2.0 ports)
Other Connectors1 x 4-pin CPU fan connector3 x 4-pin system fan connectors1 x Front panel audio connector2 x Front panel connectors1 x 5050 RGB LED strip 12V connector1 x Thunderbolt add-on card connector1 x TPM module connector1 x Chassis Intrusion connector1 x Clear CMOS jumper
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin ATX main power connector1 x 8-pin ATX 12V power connector
FeaturesSupports 9th/8th Gen Intel Core / Pentium Gold / Celeron processors for LGA 1151 socketSupports DDR4 Memory, up to 2666 MHzTwin Turbo M.2: With 2 x M.2 slots. Running at PCI-E Gen3 x4 maximizes performance for NVMe based SSDsIntel Turbo USB 3.1 Gen2: Powered by Intel, ensure an uninterrupted connection with more stability and fastest USB speedsExtended Heatsink Design: MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speedCore Boost: With premium layout optimized power design to support more cores and provide better performanceDDR4 Boost: A

Questions about this item

How much heat does the extended heatsink design handle when an i7 runs all day?

The board uses extended PWM and enhanced circuit design so even a high-end i7 can run at full speed while the extended heatsinks keep temperatures lower.

Which memory kits must I already own to populate the four 288-pin slots?

You need DDR4 modules rated for 2666, 2400 or 2133 MHz; the board supports up to 64 GB in dual-channel mode.

Will my existing SATA 6Gb/s drives work alongside the two M.2 slots?

Yes, four SATA 6Gb/s ports are available, though SATA2 becomes unavailable when an M.2 device is installed in the M2_1 slot.

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