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ATX motherboard with AM2 socket and DDR2 slots

ASUS

ASUS M3A78 AMD 770 DDR2 8GB ATX Motherboard

SKU CH-8SR9-1N924

Socket AM2/AM2+/AM3 board with AMD 770 chipset supporting up to 8 GB DDR2 memory in ATX form factor

  • CPU socketSocket AM2/AM2+/AM3
  • ChipsetAMD 770
  • Max supported RAM8 GB
  • Supports legacy AMD processors with Socket AM2/AM2+ compatibility
  • AMD 770 chipset provides stable platform for desktop builds
  • DDR2 memory support up to 8 GB maximum capacity
  • ATX form factor fits standard chassis layouts
  • Includes SATA cable and I/O back panel for immediate setup

Socket AM2/AM2+ Platform Board

The ASUS M3A78 is an ATX motherboard built around the AMD 770 chipset. It accepts processors that fit Socket AM2, AM2+ and AM3, giving a clear upgrade path for existing AMD systems. The board supports up to 8GB of DDR2 memory across its slots.

Steady Operation with Standard Cooling

Under sustained load the AMD 770 chipset and voltage regulators run within their rated thermal envelope using the board's standard heatsinks. No extra active cooling is required for typical workloads, and the layout keeps critical traces short to maintain signal integrity during long sessions.

Direct Replacement for Older AM2 Boards

This board replaces earlier AM2-only designs that cannot run AM2+ or AM3 processors or that limit memory below 8GB. The jump is worthwhile when a faster compatible CPU and more DDR2 capacity are needed without changing the case or power supply.

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 nameASUS
Product lineASUS M3A78
Model nameASUS M3A78
Processor
CPU socketSocket AM2/AM2+/AM3
ChipsetAMD 770
Memory
Max supported RAM8 GB

Questions about this item

How loud and hot does the ASUS M3A78 get when running all day?

The AMD 770 chipset and Socket AM2/AM2+/AM3 design draw moderate power; expect typical ATX board thermals and fan noise under sustained load.

What CPU and memory must I already own for this board to work?

You need a Socket AM2, AM2+ or AM3 processor and DDR2 modules up to 8 GB total capacity.

Will my older SATA drives and ATX case work with the ASUS M3A78?

Yes, the board provides SATA ports and standard ATX mounting holes, so existing SATA drives and cases fit directly.

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