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
Dark green micro-ATX motherboard with silver heatsinks, black PCB, LGA 1700 socket, four DDR5 slots, two full-length PCIe slots

MSI

MSI MAG B660M MORTAR WIFI DDR5 Intel motherboard

SKU CH-MN4Z-HBHHX

Micro-ATX Intel B660 board with LGA 1700 socket, dual-channel DDR5 memory up to 128 GB, 2.5 Gb LAN, Wi-Fi and USB 3.2 Gen 2x2 20 Gbps Type-C

  • ProcessorSupports 12th Gen Intel Core™, Pentium Gold and Celeron proc
  • ChipsetIntel B660
  • CPU socketLGA 1700
  • Supported memorySupport dual-channel DDR5 5200 and above MHz memory
  • Max supported RAM128 GB
  • PCI slots2x PCIe x16 slots PCI_E1 slot (From CPU) Supports PCIe 4.0 x
  • Supports 12th Gen Intel Core processors on LGA 1700 socket
  • Dual-channel DDR5 memory up to 5200 MHz and 128 GB capacity
  • 5 Gbps LAN with Realtek 8125BG controller for fast wired networking
  • 1-channel audio via Realtek ALC1200 codec with S/PDIF output
  • USB 3.2 Gen2x2 20 Gbps Type-C port on rear I/O panel

MAG B660M Mortar DDR5 foundation

This Micro ATX board pairs the Intel B660 chipset with an LGA 1700 socket for 12th Gen Core, Pentium Gold and Celeron CPUs. It targets builders who want a compact foundation for DDR5 memory and modern I/O without a full ATX footprint.

Bundled back-panel and cabling

A CMOS battery, one SATA cable and the chassis I/O shield are included so the board can be installed and powered immediately. The Wi-Fi antenna is also supplied because the module is integrated on the PCB. No additional accessories or software media are provided.

B660 chipset lane limits

The chipset provides a PCIe 3.0 x4 link to the second x16 slot and a single PCIe 3.0 x1 slot, capping add-in bandwidth on those lanes. Six SATA III ports and two M.2 interfaces share the remaining chipset resources, so populating every drive connector can saturate the available throughput.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $199.99
Pricier than about 81% of the 2,965 comparable items (median $97.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMSI
Product lineMSI MAG B660M MORTAR WIFI DDR5
Model nameMSI MAG B660M MORTAR WIFI DDR5
Processor
ProcessorSupports 12th Gen Intel Core™, Pentium Gold and Celeron processors
Processor socket LGA1700
CPU socketLGA 1700
ChipsetIntel B660
Memory
Supported memorySupport dual-channel DDR5 5200 and above MHz memory
Max supported RAM128 GB
Storage
SATA and RAID support2XM.2 interface, 6xSATA III interface
Audio & video
Audio chipRealtek ALC1200 Codec
7.1-Channel High Definition Audio
Supports S/PDIF output
Connectivity
Ethernet controller1x Realtek 8125BG 2.5 Gbit/s LAN controller
Ports & slots
PCI slots2x PCIe x16 slots
PCI_E1 slot (From CPU)
Supports PCIe 4.0 x16
PCI_E3 slot (From B660 Chipset)
Supports PCIe 3.0 x4
1x PCIe 3.0 x1 slot

Questions about this item

Will the CMOS battery need replacing during the board's life?

The package includes a CMOS battery; replacement is only needed when the system clock loses time after power-off.

Which slot limits GPU bandwidth first under heavy load?

The PCI_E3 slot runs at PCIe 3.0 x4 from the B660 chipset, so a card installed there hits that ceiling before the CPU-linked x16 slot.

How hot or loud does the VRM area get during all-day workloads?

The board uses a heatsink-covered VRM design with no active fan, so noise stays at case-fan level and temperatures depend on chassis airflow.

More in Motherboards for Intel CPUs

Similar items