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Rectangular ATX motherboard in dark green with black heatsinks, silver CPU socket and multiple expansion slots

MSI

MSI B85-G43 Intel motherboard LGA 1150 DDR3 32GB ATX

SKU CH-K0ZD-AGT8K

Supports 4th Gen Intel Core CPUs on LGA 1150 with dual-channel DDR3 up to 32 GB, PCIe 3.0 x16, 7.1 audio and Gigabit LAN

  • Processor4th Generation Intel Core i7/Core i5/Core i3/Pentium/Celeron
  • ChipsetIntel B85
  • CPU socketLGA 1150
  • Supported memorySupports dual-channel DDR3 1600/1333/1066 MHz memory
  • Max supported RAM32 GB
  • PCI slots1 PCIe 3.0 x16 slot 1 PCIe 2.0 x16 slot - Can support PCIe 2
  • Supports 4th Gen Intel Core i7/i5/i3/Pentium/Celeron via LGA 1150 socket
  • Dual-channel DDR3 memory up to 32GB at 1600/1333/1066MHz
  • One PCIe 3.0 x16 slot plus one PCIe 2.0 x16 slot running at x4 speed
  • Realtek ALC892 7.1-channel audio and Realtek 8111E Gigabit LAN
  • Four USB 3.0 and eight USB 2.0 ports with four SATA III and two SATA II connectors

LGA 1150 ATX board for 4th Gen Intel

This MSI B85-G43 motherboard fits the LGA 1150 socket and the Intel B85 chipset. It accepts 4th Generation Intel Core i7, i5, i3, Pentium and Celeron processors. The ATX form factor suits standard desktop chassis and provides a full complement of expansion slots for general-purpose builds.

System builders using DDR3 memory

The board runs dual-channel DDR3 at 1600, 1333 or 1066 MHz up to a 32 GB limit. Four SATA III and two SATA II ports handle multiple drives. Realtek ALC892 delivers 7.1-channel audio and a Realtek 8111E controller provides 10/100/1000 Ethernet. Builders who need more than 32 GB of RAM or additional PCIe 3.0 lanes should consider a different platform.

One PCIe 3.0 x16 slot decides GPU choice

A single PCIe 3.0 x16 slot is the only connection that runs at full 3.0 speed for a graphics card. A second x16 slot operates at PCIe 2.0 x4, two x1 slots and three legacy PCI slots complete the layout. If the graphics card requires the sole 3.0 x16 link, no other high-bandwidth add-in card can share that bandwidth.

How it compares

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

Price $46.99
Cheaper than about 87% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI B85-G43
Model nameMSI B85-G43
Processor
Processor4th Generation Intel Core i7/Core i5/Core i3/Pentium/Celeron processors with Socket 1150 architecture
CPU socketLGA 1150
ChipsetIntel B85
Memory
Supported memorySupports dual-channel DDR3 1600/1333/1066 MHz memory
Max supported RAM32 GB
Storage
SATA and RAID support4XSATA III interface; 2xSATA II interface
Audio & video
Audio chipRealtek ALC892–7.1-channel high-quality sound effects
Connectivity
Ethernet controller1 PCI Express network port supports 10/100/1000 Fast Ethernet provided by Realtek 8111E
Ports & slots
PCI slots1 PCIe 3.0 x16 slot
1 PCIe 2.0 x16 slot
- Can support PCIe 2.0 x4 speed
2 x PCIe 2.0 x1 slots
3 PCI slots
Onboard USB headersIntel B85 Express Chipset
- 4 USB 3.0 ports (2 on the backplane, 2 built-in)
- 8 USB 2.0 ports (6 on the backplane, 2 built-in)

Questions about this item

When will the included CMOS battery need replacing and what type does it take?

A fresh CMOS battery is supplied with the board; when the system clock starts to drift you replace it with a standard coin cell.

Which expansion slot caps GPU bandwidth under sustained load?

The single PCIe 3.0 x16 slot sets the ceiling for graphics throughput; the second x16 connector runs at PCIe 2.0 x4 speed.

How loud and hot does the Realtek 8111E LAN and ALC892 audio get during all-day operation?

Both controllers are low-power integrated chips; they add negligible heat and produce no audible noise, so case airflow alone keeps them cool.

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