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Rectangular ATX motherboard, dark PCB with silver heatsinks and blue memory slots

GIGABYTE

GIGABYTE GA-A55-DS3P rev.1.0 AMD motherboard

SKU CH-XMWY-Z5635

Socket FM1 ATX board with AMD A75 chipset, four DDR3 slots for 64GB, one PCIe x16, one PCIe x4, two PCIe x1, six SATA ports, Realtek ALC889 7.1 audio and gigabit LAN

  • ProcessorAM3 + slot: 1. Support AMD AM3 + processor 2. Support AMD AM
  • ChipsetAMD A75
  • CPU socketSocket AM3+/AM3
  • Max supported RAM64 GB
  • PCI slots1 PCI Express x16 slot, supporting x16 operation specificati
  • SATA and RAID support6XSATA II interface
  • Supports up to 64GB DDR3 memory capacity
  • AMD A75 chipset for FM1 socket processors
  • 14 USB 2.0 ports with 6 rear connections
  • Realtek ALC889 audio with 7.1 channel support
  • Gigabit LAN via Realtek RTL8111E controller

Socket FM1 AMD A75 ATX board

The GIGABYTE GA-A55-DS3P rev.1.0 is a Socket FM1 motherboard built on the AMD A75 chipset. It fits a standard ATX layout measuring 30.5 by 22.5 cm and provides four DDR3 DIMM slots supporting up to 64GB of system memory.

Suits FM1 APU builds only

This board suits builders assembling or repairing a system around an AMD FM1 processor with integrated graphics. It will not accept AM3, AM3+, AM4 or AM5 CPUs, and the four memory slots are limited to DDR3 modules only.

Single PCIe x16 slot at x16

The expansion layout includes one PCI Express x16 slot running at x16, a second x16-size slot wired for x4 operation, and two PCI Express x1 slots. That single full-speed x16 link is the specification that decides whether a discrete graphics card can run at its intended bandwidth.

How it compares

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

Price $44.99
Cheaper than about 93% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameGIGABYTE
Product lineGIGABYTE GA-A55-DS3P(rev.1.0)
Model nameGIGABYTE GA-78LMT-S2(rev.1.0)
Processor
ProcessorAM3 + slot:
1. Support AMD AM3 + processor
2. Support AMD AM3 Phenom ™ II processor/AMD Athlon ™ II processor
CPU socketSocket AM3+/AM3
ChipsetAMD A75
Memory
Max supported RAM64 GB
Storage
SATA and RAID support6XSATA II interface
Audio & video
Audio chip1. Built-in Realtek ALC889 chip
2. Support High Definition Audio
3. Support 2/4/5 1/7.1 channels
4. Support S/PDIF output
Connectivity
Ethernet controllerBuilt-in 1 Realtek RTL8111E chip (10/100/1000 Mbit)
Ports & slots
Onboard USB headersBuilt-in chipset:
Up to 14 USB 2.0/1 ports (6 on the rear panel, 8 to be connected via cable from the USB socket in the main board)

Questions about this item

What CPU socket must my processor match for this GA-A55-DS3P board?

The board uses Socket FM1, so the installed processor must be an FM1-package AMD APU.

Will my existing DDR3 memory modules work in the four DIMM slots?

Yes, the four DDR3 DIMM slots accept standard DDR3 modules up to a total of 64GB.

How can I confirm the onboard Realtek ALC889 audio is active after assembly?

Boot the system, open the OS sound control panel, and verify that the Realtek High Definition Audio device appears and plays test tones through the rear panel jacks.

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