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Rectangular ATX motherboard with black PCB, silver heatsinks, blue expansion slots and rear I/O panel

MSI

MSI A75A-G55 AMD motherboard Socket FM1 DDR3 32GB ATX

SKU CH-QGMV-SV7KE

Socket FM1 ATX board with AMD A75 chipset, dual-channel DDR3 up to 1866MHz, 32GB max, six SATA III ports, Realtek ALC887 audio and gigabit LAN

  • CPU Socket TypeSocket FM1
  • CPU TypeAMD Llano APU, FM1
  • ChipsetAMD A75
  • Memory StandardSupports dual-channel DDR3 1866 (overclocking)/1600MHz memor
  • Maximum Memory Supported32GB
  • PCI Slots2 PCI Express x16 slots - 1, slot (PCI_E1) supports PCIE 2.0
  • Supports 32GB dual-channel DDR3 memory up to 1866MHz for responsive multitasking
  • AMD A75 chipset with Socket FM1 compatibility for Llano APU builds
  • Six SATA III ports provide ample high-speed storage connectivity
  • Realtek ALC887 audio delivers 8-channel sound with Azalia 1.0 support
  • Realtek 8111E Gigabit LAN handles 10, 100 and 1000Mb/s network speeds

Socket FM1 platform for AMD Llano APUs

This MSI A75A-G55 motherboard accepts AMD Llano APUs in the Socket FM1 package. It is built around the AMD A75 chipset and follows the ATX form factor for standard desktop chassis. The board targets builders assembling a system around an integrated graphics processor.

Dual-channel DDR3 up to 32 GB

Memory support is the specification that determines compatibility. The board runs dual-channel DDR3 at 1600 MHz natively and can reach 1866 MHz when overclocked. Four slots provide a maximum capacity of 32 GB for applications that benefit from larger memory pools.

Multi-GPU layout with PCIe 2.0 lanes

Two PCI Express x16 slots operate at x16 and x4 speeds under the PCIe 2.0 standard, allowing crossfire configurations without halving the primary lane width. Three additional x1 slots and two legacy PCI slots remain available for add-in cards. The electrical layout sustains bandwidth during extended compute or rendering sessions.

Highlights

  • Supports 32GB dual-channel DDR3 memory up to 1866MHz for responsive multitasking
  • AMD A75 chipset with Socket FM1 compatibility for Llano APU builds
  • Six SATA III ports provide ample high-speed storage connectivity
  • Realtek ALC887 audio delivers 8-channel sound with Azalia 1.0 support
  • Realtek 8111E Gigabit LAN handles 10, 100 and 1000Mb/s network speeds

Specifications

BrandMSI
SeriesMSI A75A-G55
ModelMSI A75A-G55
CPU Socket TypeSocket FM1
CPU TypeAMD Llano APU, FM1
ChipsetAMD A75
Memory StandardSupports dual-channel DDR3 1866 (overclocking)/1600MHz memory
Maximum Memory Supported32GB
PCI Slots2 PCI Express x16 slots
- 1, slot (PCI_E1) supports PCIE 2.0 x 16 speed execution
- 1, slot (PCI_E5) supports PCIE 2.0 x4 speed execution
3 PCI Express x1 slots
2 PCI slots, supporting 3.3v/5v PCI main bus interface
SATA RAID6XSATA III interface
Audio ChipsetRealtek ALC887 Chip
- Supports 8-channel sound effects detected by intelligent sound interface
Compatible with Azalia 1.0 specifications
LAN ChipsetRealtek PCI-E GbLAN Controller REL8111E Chip
Supports 10Mb/s, 100Mb/s and 1000Mb/s
Compliant with PCI-Express bus specification v1.0a.
Onboard USB4 USB 2.0 ports (backplane)

Questions about this item

Will this board run my AMD Llano APU without a BIOS update?

The board uses the A75 chipset and FM1 socket, which are designed for Llano APUs, so it should work out of the box.

Can I install 32 GB of DDR3 memory in four sticks?

Yes, the maximum supported capacity is 32 GB across dual-channel DDR3 slots at 1600 MHz or 1866 MHz with overclocking.

Does the primary PCI Express x16 slot run at full 2.0 x16 speed?

The first x16 slot (PCI_E1) operates at PCIe 2.0 x16 while the second x16 slot (PCI_E5) runs at x4 speed.

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