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Micro ATX board in dark finish with CPU socket and expansion slots

MSI

MSI A55M-P35 AMD Motherboard Socket FM1 A55 DDR3 16GB Micro ATX

SKU CH-3FJY-0N18Y

Socket FM1 board with AMD A55 chipset, dual-channel DDR3 1866MHz support up to 16GB, PCI Express 2.0 x16, six SATA II ports, Realtek ALC887 audio and gigabit LAN

  • ProcessorAMD Llano APU, FM1
  • ChipsetAMD A55
  • CPU socketSocket FM1
  • Supported memorySupports dual-channel DDR3 1866 MHz memory
  • Max supported RAM16 GB
  • PCI slots1 PCI Express x16 slot, supports PCIE 2.0 × 16 speed executi
  • Supports dual-channel DDR3 1866MHz memory for responsive multitasking
  • 16GB maximum memory capacity handles demanding workloads
  • AMD A55 chipset with Socket FM1 for Llano APU compatibility
  • Realtek ALC887 8-channel audio delivers clear sound output
  • Realtek 8111E Gigabit LAN provides 1000Mb/s wired connectivity

FM1 Socket AMD A55 Board

The MSI A55M-P35 is a Micro ATX motherboard built for AMD Llano APUs in the FM1 socket. It targets budget desktop builds and basic office upgrades that still rely on DDR3 memory. The A55 chipset provides essential connectivity without enthusiast features.

Low-Power Thermal Profile

The A55 chipset and FM1 APUs run at modest power levels, so passive chipset cooling and a standard CPU cooler keep temperatures low in daily use. The Realtek ALC887 audio and REL8111E gigabit LAN add minimal heat. Fan headers let the system stay quiet during typical workloads.

Steady Load Behaviour

Under sustained load the board maintains PCIE 2.0 x16 link speed for the graphics slot while the six SATA II ports handle continuous storage traffic. Dual-channel DDR3 at 1866 MHz feeds the APU without throttling. The 3.3 V and 5 V PCI slot remains active for legacy cards throughout long sessions.

How it compares

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

Price $33.99
Cheaper than about 95% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI A55M-P35
Model nameMSI A55M-P35
Processor
ProcessorAMD Llano APU, FM1
CPU socketSocket FM1
ChipsetAMD A55
Memory
Supported memorySupports dual-channel DDR3 1866 MHz memory
Max supported RAM16 GB
Storage
SATA and RAID support6XSATA II 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 slots1 PCI Express x16 slot, supports PCIE 2.0 × 16 speed execution
2 PCI Express x1 slots
1 PCI slot, supports 3.3v/5v PCI main bus interface
Onboard USB headers6 USB 2.0 ports (backplane)

Questions about this item

How do I install the AMD Llano APU into the Socket FM1 and what step is often missed?

Align the gold triangle on the APU with the socket corner, lower the lever fully, then attach the cooler — many forget to remove the protective plastic cover from the socket before seating the processor.

What maintenance will the MSI A55M-P35 need later?

Replace the supplied CMOS battery when the system loses time or BIOS settings; the board includes one battery in the box.

What limit appears first under sustained load on this board?

The AMD A55 chipset and VRM area can become the thermal bottleneck during long heavy workloads because the micro‑ATX layout offers limited heatsink surface.

More in Motherboards for AMD CPUs

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