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MSI Z77A-GD55 ATX motherboard black PCB silver heatsinks LGA 1155 socket DDR3 slots PCIe expansion slots SATA ports rear I/O panel

MSI

MSI Z77A-GD55 Intel Z77 LGA 1155 DDR3 ATX Motherboard

SKU CH-E322-YC5H8

Supports 3rd Gen Intel Core processors with 32GB DDR3 2667 MHz, dual PCIe 3.0 x16, SATA III, 8.1 channel audio and Intel Gigabit LAN

  • Processor3rd Gen Intel Core ™ i7/Core ™ i5/Core ™ i3/Pentium/Celeron
  • ChipsetIntel Z77
  • CPU socketLGA 1155
  • Supported memorySupports dual-channel DDR3 2667 (overclocked) MHz memory
  • Max supported RAM32 GB
  • PCI slots2 x PCIe 3.0 x16 slots 1 x PCIe 2.0 x16 slot PCI_E7 supports
  • Supports 3rd Gen Intel Core processors with LGA 1155 socket
  • Intel Z77 chipset enables DDR3 2667 MHz overclocked memory
  • Four PCIe 3.0 x16 slots for multi-GPU configurations
  • Realtek ALC892 delivers 8.1 channel high-definition audio
  • Intel 82579V provides 10/100/1000 Gigabit Ethernet connectivity

Socket and chipset

The MSI Z77A-GD55 uses the Intel Z77 chipset and an LGA 1155 socket. It accepts third-generation Intel Core i7, i5 and i3 processors as well as Pentium and Celeron models. The board follows the ATX form factor for standard desktop builds.

Memory and expansion

Four DDR3 slots support dual-channel memory up to 32 GB with overclocked speeds of 2667 MHz. Expansion includes two PCIe 3.0 x16 slots, one PCIe 2.0 x16 slot and four PCIe 2.0 x1 slots. Storage connectivity provides four SATA II and two SATA III ports with RAID support.

Connectivity and audio

The Realtek ALC892 codec delivers 8.1 channel audio with intelligent jack detection. Networking is handled by an Intel 82579V Gigabit Ethernet controller. USB 3.0 is available through two rear ports and one internal header provided by the Z77 chipset.

How it compares

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

Price $56.99
Cheaper than about 80% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI Z77A-GD55
Model nameMSI Z77A-GD55
Processor
Processor3rd Gen Intel Core ™ i7/Core ™ i5/Core ™ i3/Pentium/Celeron processors with Socket 1155 architecture
CPU socketLGA 1155
ChipsetIntel Z77
Memory
Supported memorySupports dual-channel DDR3 2667 (overclocked) MHz memory
Max supported RAM32 GB
Storage
SATA and RAID support4XSATA II interface; 2xSATA III interface
Audio & video
Audio chipRealtek ALC892 Audio Chip
- 8.1 channel sound effects that support intelligent sound interface detection
Compatible with Azalia 1.0 specifications
Connectivity
Ethernet controller1 PCI Express network port supports 10/100/1000 Fast Ethernet provided by Intel 82579 V
Ports & slots
Onboard USB headersIntel Z77 chip supports two USB 3.0 I/O ports
Intel Z77 chip supports a USB 3.0 internal port

Questions about this item

Which DDR3 memory speed does the Z77A-GD55 support for overclocked modules?

The board supports dual-channel DDR3 at 2667 MHz when using overclocked memory.

How many PCIe 3.0 x16 slots does the board provide for a legacy graphics card?

Two PCIe 3.0 x16 slots are available, and a third slot runs at PCIe 2.0 x16 speeds.

How can I confirm the Realtek ALC892 audio is active after installation?

The 8.1 channel sound effects and intelligent interface detection will appear in the audio control panel once drivers are loaded.

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