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Black ATX motherboard with silver heatsinks, red accents, LGA 1151 socket, four DDR4 slots, multiple PCIe slots, rear I/O panel

MSI

MSI B250 GAMING M3 LGA 1151 Intel motherboard

SKU CH-D2M7-H84Q7

ATX board for 6th/7th gen Intel Core, Pentium and Celeron CPUs with dual-channel DDR4 up to 64 GB, two PCIe 3.0 x16 slots, six SATA III ports, Realtek ALC1220 7.1 audio and Killer E2500 Gigabit LAN

  • ProcessorSupports 6th/7th generation Intel Core i3/i5/i7 processors,
  • ChipsetIntel B250
  • CPU socketLGA 1151
  • Supported memorySupports dual-channel DDR4 2400/2133 MHz memory
  • Max supported RAM64 GB
  • PCI slots2 PCIe 3.0 x16 slots (x16/x4 mode supported) * 4 PCIe 3.0 x1
  • Supports 6th/7th gen Intel Core i3/i5/i7 and Pentium/Celeron CPUs via LGA 1151 socket
  • Dual-channel DDR4 memory up to 64GB at 2400/2133MHz for multitasking headroom
  • 2 PCIe 3.0 x16 slots (x16/x4) plus 4 PCIe 3.0 x1 slots for expansion
  • Realtek ALC1220 codec with 7.1 channel audio for immersive sound
  • Killer E2500 Gigabit LAN plus USB 3.1 Gen2 10Gbps Type-A and Type-C ports

LGA 1151 ATX platform

The MSI B250 GAMING M3 is an ATX motherboard built on the Intel B250 chipset for LGA 1151 processors. It supports 6th and 7th generation Intel Core i3, i5 and i7 CPUs alongside Pentium and Celeron models. Dual-channel DDR4 memory runs at 2400 or 2133MHz up to a 64GB limit.

Gaming builders with legacy CPUs

This board suits owners of 6th or 7th generation Intel chips who need multiple expansion slots and 7.1 channel audio from the Realtek ALC1220 codec. The Killer E2500 Gigabit LAN adds low-latency networking for competitive play. Builders starting fresh with a newer socket should look elsewhere.

64GB DDR4 and twin x16 slots

Four DIMM slots provide comfortable headroom for 64GB of DDR4, enough for heavy multitasking and content work. Two PCIe 3.0 x16 slots operate in x16/x4 mode for a primary graphics card and a secondary add-in card. Six SATA III ports and two M.2 interfaces cover most storage needs, while rear USB 3.1 Gen2 Type-C and Type-A ports deliver 10Gbps connectivity.

How it compares

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

Price $84.99
Cheaper than about 58% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI B250 GAMING M3
Model nameMSI B250 GAMING M3
Processor
ProcessorSupports 6th/7th generation Intel Core i3/i5/i7 processors, as well as Intel Pentium and Celeron processors with pin LGA1151
CPU socketLGA 1151
ChipsetIntel B250
Memory
Supported memorySupports dual-channel DDR4 2400/2133 MHz memory
Max supported RAM64 GB
Storage
SATA and RAID support2XM.2 interface, 6xSATA III interface
Audio & video
Audio chipRealtek ALC1220 decoding chip
- 7.1 channel high-quality sound effects
- Channel high-quality sound effects
Connectivity
Ethernet controller1 Killer E2500 Gigabit network interface card
Ports & slots
PCI slots2 PCIe 3.0 x16 slots (x16/x4 mode supported) *
4 PCIe 3.0 x1 slots
Onboard USB headers- 1 USB 3.1 Gen2 (SuperSpeed USB 10 Gbit/s) Type-C port on the backplane
1 USB 3.1 Gen2 (SuperSpeed USB 10 Gbit/s) Type-A port on the backplane

Questions about this item

Which CPU socket must my processor fit for this MSI B250 GAMING M3 board?

The board uses the LGA 1151 socket, so you need a 6th or 7th generation Intel Core i3, i5, i7, Pentium or Celeron with that pin layout.

Will my existing DDR4 2133 MHz memory run at its rated speed on this motherboard?

Yes, the board supports dual-channel DDR4 at 2133 MHz and 2400 MHz, so your modules will operate at their native frequency.

How can I confirm the Killer E2500 LAN controller is active after I build the system?

Open Device Manager in Windows; the network adapters list should show a Killer E2500 Gigabit Ethernet controller without error icons.

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