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Green micro ATX motherboard with black and blue slots and silver heatsinks

MSI

MSI 785GM-P45 AM3 AMD 785G DDR3 16GB micro ATX motherboard

SKU CH-S54A-3N40X

Socket AM3 board with AMD 785G chipset, dual-channel DDR3 up to 1600 MHz, 16 GB maximum memory, PCI Express 2.0 x16, two PCI Express x1, one PCI, six SATA ports, 8-channel VIA VT1708S audio.

  • ProcessorSupports 64-bit AMD Phenom II/Athlon II/Sempron processors
  • ChipsetAMD 785G
  • CPU socketSocket AM3
  • Supported memorySupports dual-channel DDR3 1600 (overclocking)/1333/1066/800
  • Max supported RAM16 GB
  • PCI slots1 PCI Express x16 slot, supports PCIE 2.0 × 16 speed executi
  • Socket AM3 supports 64-bit AMD Phenom II, Athlon II and Sempron CPUs
  • AMD 785G chipset with integrated graphics for compact builds
  • Dual-channel DDR3 up to 1600 MHz overclocking and 16 GB maximum memory
  • PCI Express 2.0 x16 slot plus two x1 slots and one PCI slot
  • Gigabit LAN with 10/100/1000 Mb/s and 8-channel VIA VT1708S audio

Socket AM3 DDR3 platform

The MSI 785GM-P45 is a micro ATX motherboard built on the AMD 785G chipset for Socket AM3 processors. It supports 64-bit Phenom II, Athlon II and Sempron CPUs and provides dual-channel DDR3 memory up to 16GB. Integrated graphics, audio and gigabit LAN are included on board.

Upgrading from older AM2 or AM2+ boards

Moving to this board adds native DDR3 support with speeds of 1600, 1333, 1066 and 800MHz and a PCI Express 2.0 x16 slot for modern graphics cards. The jump is worthwhile when you need more than 8GB of memory or want the bandwidth of PCIE 2.0 for a newer GPU.

16GB memory ceiling and six SATA ports

Four DIMM slots hold up to 16GB of DDR3, which is sufficient for typical desktop workloads and light content creation. Six SATA 3Gb/s ports give room for multiple hard drives or SSDs, while a single PCI slot and two PCIe x1 slots handle legacy or extra add-in cards. The board tops out at 16GB and lacks USB 3.0 or faster storage interfaces.

How it compares

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

Price $41.99
Cheaper than about 94% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI 785GM-P45
Model nameMSI 785GM-P45
Processor
ProcessorSupports 64-bit AMD Phenom II/Athlon II/Sempron processors
CPU socketSocket AM3
ChipsetAMD 785G
Memory
Supported memorySupports dual-channel DDR3 1600 (overclocking)/1333/1066/800 MHz memory
Max supported RAM16 GB
Storage
SATA and RAID support6XSATA II interface
Audio & video
Audio chipVIA VT1708S Audio Chip
- Supports 8-channel sound effects detected by intelligent sound interface
Compatible with Azalia 1.0 specifications
Connectivity
Ethernet controllerAtheros PCI-E GbLAN Controller AR8131M Chip
- Integrate Fast Ethernet MAC and PHY into a single 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 headers4 USB 2.0 ports (backplane)

Questions about this item

What micro ATX case and mounting holes does the 785GM-P45 fit?

The board uses the standard micro ATX form factor with mounting holes spaced for any micro ATX or larger ATX chassis.

How is the 785GM-P45 installed, and which step is often missed?

Mount the board on standoffs, connect the 24-pin and 4-pin CPU power headers, insert DDR3 modules until the latches click, attach the supplied I/O shield, then connect front-panel headers; the step most often missed is seating the I/O shield before securing the board.

What component on the 785GM-P45 will need replacement over time?

The included CMOS battery maintains BIOS settings and will eventually need replacement when the system loses date or time.

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