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ATX motherboard with black PCB, silver heatsinks, and blue slots

MSI

MSI FM2-A85XA-G43 AMD A85X Socket FM2 DDR3 ATX Motherboard

SKU CH-NFY7-5Z382

An AMD A85X chipset board with Socket FM2 that supports dual-channel DDR3 up to 2400MHz and 64GB capacity, plus 8 SATA III ports and 8.1-channel audio

  • CPU Socket TypeSocket FM2
  • CPU TypeAMD A10/A8/A6/A4 series processors supporting Socket FM2 arc
  • ChipsetAMD A85X
  • Memory StandardSupports dual-channel DDR3 2400 (overclocking)/2133/1866/160
  • Maximum Memory Supported64GB
  • PCI Slots2 PCIE 2.0 x16 slots - PCI_E2 support PCIE x16 speed - PCI_E
  • Supports up to 64GB dual-channel DDR3 memory at 2400MHz overclocking
  • AMD A85X chipset enables 8 SATA III ports for high-speed storage arrays
  • Realtek ALC892 codec delivers 8.1 channel audio with intelligent jack detection
  • Two rear USB 3.0 ports plus one internal header for front-panel connectivity
  • Gigabit LAN via RTL8111E provides 10/100/1000Mbps wired networking

FM2 Socket A85X ATX Board

The MSI FM2-A85XA-G43 is an ATX motherboard built around the AMD A85X chipset for Socket FM2 processors. It accepts AMD A10, A8, A6 and A4 series CPUs and provides four DDR3 slots supporting up to 64GB of memory. The board targets builders assembling or refreshing FM2-based desktop systems.

Replaces Older FM2 Boards

This model upgrades from earlier FM2 designs by adding dual-channel DDR3 support up to 2400MHz when overclocked and eight SATA III ports for storage expansion. The jump is worthwhile when you need higher memory speeds or more drive connections than budget FM2 boards provide. Two PCIe 2.0 x16 slots, three PCIe 2.0 x1 slots and two legacy PCI slots cover multi-GPU and add-in card requirements.

PCIe 2.0 and SATA III Limits

PCIe 2.0 caps each lane at 5 GT/s, so the primary x16 slot and the secondary x4 slot share that bandwidth ceiling. SATA III tops out at 6 Gb/s per port, limiting sequential throughput on modern SSDs. The Realtek RTL8111E LAN controller handles 10, 100 and 1000 Mb/s Ethernet, and two rear USB 3.0 ports plus one internal header deliver 5 Gb/s USB connectivity.

Highlights

  • Supports up to 64GB dual-channel DDR3 memory at 2400MHz overclocking
  • AMD A85X chipset enables 8 SATA III ports for high-speed storage arrays
  • Realtek ALC892 codec delivers 8.1 channel audio with intelligent jack detection
  • Two rear USB 3.0 ports plus one internal header for front-panel connectivity
  • Gigabit LAN via RTL8111E provides 10/100/1000Mbps wired networking

Specifications

BrandMSI
SeriesMSI FM2-A85XA-G43
ModelMSI FM2-A85XA-G43
CPU Socket TypeSocket FM2
CPU TypeAMD A10/A8/A6/A4 series processors supporting Socket FM2 architecture
ChipsetAMD A85X
Memory StandardSupports dual-channel DDR3 2400 (overclocking)/2133/1866/1600/1333/1066MHz memory
Maximum Memory Supported64GB
PCI Slots2 PCIE 2.0 x16 slots
- PCI_E2 support PCIE x16 speed
- PCI_E5 support PCIE x4 speed
3 PCIE 2.0 x1 slots
2 PCI slots
SATA RAID8XSATA III interface
Audio ChipsetRealtek ALC892 Audio Chip
- 8.1 channel sound effects that support intelligent sound interface detection
Compatible with Azalia 1.0 specifications
LAN Chipset1 PCI Express network port supports 10/100/1000 Fast Ethernet provided by RTL8111E
- Supports 10Mb/s, 100Mb/s and 1000Mb/s
Compliant with PCI-Express bus specification v1.0a.
Onboard USB2 backplane USB 3.0 ports
1 built-in USB 3.0 port

Questions about this item

What case clearance does the ATX form factor of this board require?

A standard ATX chassis with at least nine mounting holes and an I/O shield cut-out that matches the supplied back panel.

Which power connectors must be seated before the first boot?

Connect the 24-pin ATX main power and the 8-pin CPU power near the socket; the 8-pin is often missed on first builds.

What onboard component will need replacement when the system loses date and time after power-off?

The CMOS battery included in the package maintains the real-time clock and can be swapped when it no longer holds charge.

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