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Green Micro-ATX board with black sockets and silver heatsinks

MSI

MSI A75MA-G55 AMD motherboard Socket FM1 32GB DDR3

SKU CH-TJ3T-8F5SC

Socket FM1 micro-ATX board with AMD A75 chipset, dual-channel DDR3 up to 1866 MHz and 32 GB maximum memory

  • ProcessorAMD Llano APU, FM1
  • ChipsetAMD A75
  • CPU socketSocket FM1
  • Supported memorySupport dual-channel DDR3 1866 +/1600/1333/1066 MHz memory
  • Max supported RAM32 GB
  • PCI slots2 PCI Express x16 slots - 1, slot (PCI_E1) supports PCIE 2.0
  • Dual-channel DDR3 up to 1866 MHz for responsive memory performance
  • AMD A75 chipset with Socket FM1 for Llano APU compatibility
  • 32 GB maximum memory capacity for multitasking headroom
  • Two PCI Express x16 slots with 2.0 x16 and x4 speeds for graphics expansion
  • Realtek ALC887 8-channel audio and Gigabit LAN for integrated connectivity

Socket FM1 APU platform

The MSI A75MA-G55 is a Micro ATX motherboard built around the AMD A75 chipset for Socket FM1 Llano APUs. It supports dual-channel DDR3 memory at 1866, 1600, 1333 and 1066 MHz up to a maximum of 32 GB. The board targets compact desktop builds that rely on integrated graphics.

Sustained load behaviour

Six SATA III ports handled by the A75 chipset keep storage throughput steady during long file transfers or RAID rebuilds. The Realtek PCI-E GbLAN controller (REL8111E) maintains 10, 100 and 1000 Mb/s network traffic without dropping to lower speeds. Onboard voltage regulation for the FM1 socket is designed for the thermal envelope of Llano APUs under continuous compute workloads.

Build and connectivity

A 1 PCI Express x16 slot running at PCIe 2.0 x16 and a second at x4 allow a discrete GPU plus an add-in card such as a capture or RAID controller. One PCI Express x1 slot and one legacy PCI slot supporting 3.3 V and 5 V buses remain for older expansion cards. Rear I/O supplies four USB 2.0 ports, Gigabit Ethernet and Realtek ALC887 8-channel audio with Azalia 1.0 compliance.

How it compares

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

Price $40.99
Cheaper than about 94% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI A75MA-G55
Model nameMSI A75MA-G55
Processor
ProcessorAMD Llano APU, FM1
CPU socketSocket FM1
ChipsetAMD A75
Memory
Supported memorySupport dual-channel DDR3 1866 +/1600/1333/1066 MHz memory
Max supported RAM32 GB
Storage
SATA and RAID support6XSATA III interface
Audio & video
Audio chipRealtek ALC887 Chip
- Supports 8-channel sound effects detected by intelligent sound interface
Compatible with Azalia 1.0 specifications
Connectivity
Ethernet controllerRealtek PCI-E GbLAN Controller REL8111E Chip
- Supports 10Mb/s, 100Mb/s and 1000Mb/s
Compliant with PCI-Express bus specification v1.0a.
Ports & slots
PCI slots2 PCI Express x16 slots
- 1, slot (PCI_E1) supports PCIE 2.0 × 16 speed execution
- 1, slot (PCI_E2) supports PCIE 2.0 x4 speed execution
1 PCI Express x1 slot
1 PCI slot, supports 3.3v/5v PCI main bus interface
Onboard USB headers4 USB 2.0 ports (backplane)

Questions about this item

Will this board take my AMD Llano APU in a micro-ATX case?

The board uses Socket FM1 and the AMD A75 chipset, which are built for Llano APUs, and its micro-ATX layout fits standard micro-ATX chassis.

What DDR3 speeds can I run and how much memory does it support?

It runs dual-channel DDR3 at 1866, 1600, 1333 or 1066 MHz and accepts up to 32 GB total.

How many SATA 6 Gbps drives can I connect and does it have Gigabit LAN?

Six SATA III ports are onboard for 6 Gbps drives, and the Realtek 8111 controller provides 10/100/1000 Mbps Ethernet.

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