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Green rectangular ATX motherboard with silver heatsinks and black expansion slots

MSI

MSI ZH77A-G43 Intel Motherboard

SKU CH-6X31-0MGJN

Intel H77 ATX board for LGA 1155 CPUs with DDR3 up to 2400 OC, dual-channel 32 GB, one PCIe 3.0 x16, one PCIe 2.0 x16, two PCIe x1, three PCI, two SATA 6Gb/s, HDMI, two USB 3.0, six USB 2.0/1.1.

  • CPU Socket TypeLGA 1155
  • CPU TypeCore i7 / i5 / i3 (LGA1155)
  • ChipsetIntel H77
  • Number of Memory Slots4x240pin
  • Memory StandardDDR3 1066/1333/1600*/1800*/2000*/2200*/2400*(OC, 22nm CPU re
  • Maximum Memory Supported32GB
  • Supports Core i7, i5 and i3 processors on LGA 1155 socket
  • Intel H77 chipset provides native USB 3.0 and SATA 6Gb/s connectivity
  • Four DDR3 slots accept up to 32 GB with dual-channel operation
  • PCI Express 3.0 x16 slot plus a second x16 slot running at 2.0 speed
  • Onboard HDMI output and Realtek ALC892 8-channel audio for integrated graphics and sound

Socket and chipset

The MSI ZH77A-G43 pairs an LGA 1155 socket with the Intel H77 chipset. It accepts Core i7, i5 and i3 processors built for that platform. Four 240-pin slots support dual-channel DDR3 up to 32 GB, with overclocked speeds of 1600, 1800, 2000, 2200 and 2400 when a 22 nm CPU is installed.

Thermals and power

The board uses a standard ATX layout with passive heatsinks on the voltage regulators and chipset. No active cooling is integrated, so system airflow determines operating temperatures. Power delivery is designed for the rated TDP of supported LGA 1155 processors without auxiliary fan headers dedicated to the VRM area.

Expansion and I/O

One PCI Express 3.0 x16 slot and one PCI Express 2.0 x16 slot handle graphics cards, while two PCI Express x1 and three legacy PCI slots add peripheral flexibility. Storage connects through two SATA 6 Gb/s ports with RAID 0, 1, 5 and 10 support. Rear I/O includes HDMI, a PS/2 combo port, two USB 3.0 and six USB 2.0/1.1 ports driven by a Realtek 8111E Gigabit LAN controller and ALC892 8-channel audio.

Highlights

  • Supports Core i7, i5 and i3 processors on LGA 1155 socket
  • Intel H77 chipset provides native USB 3.0 and SATA 6Gb/s connectivity
  • Four DDR3 slots accept up to 32 GB with dual-channel operation
  • PCI Express 3.0 x16 slot plus a second x16 slot running at 2.0 speed
  • Onboard HDMI output and Realtek ALC892 8-channel audio for integrated graphics and sound

Specifications

BrandMSI
ModelZH77A-G43
CPU Socket TypeLGA 1155
CPU TypeCore i7 / i5 / i3 (LGA1155)
ChipsetIntel H77
Number of Memory Slots4x240pin
Memory StandardDDR3 1066/1333/1600*/1800*/2000*/2200*/2400*(OC, 22nm CPU required)
Maximum Memory Supported32GB
Channel SupportedDual Channel
PCI Express 3.0 x161 x PCI Express 3.0 x16
PCI Express 2.0 x161 x PCI Express 2.0 x16
PCI Express x12 x PCI Express x1
PCI Slots3 x PCI Slots
Serial ATA (SATA)2 x SATA 6Gb/s
SATA RAID0/1/5/10
Audio ChipsetRealtek ALC892
Audio Channels8 Channels
LAN ChipsetRealtek 8111E
Max LAN Speed1Gbps
Back I/O Ports1 x HDMI / 1 x PS/2 Keyboard/Mouse Combo / 2 x USB 3.0 / 6 x USB 2.0/1.1
PS/21 x PS/2 keyboard/mouse port
Video PortsD-Sub + DVI
HDMI1 x HDMI
USB 3.02 x USB 3.0
USB 1.1/2.06 x USB 2.0
Audio Ports6 Ports
Onboard USB2 x USB 3.0 + 4 x USB 2.0
Other ConnectorsATX 24-Pin power connector8-pin ATX 12V power connectorCPU x 1 / System x 4 FAN connectors1 x Clear CMOS jumper1 x Serial port connector1 x Parallel port connector1 x TPM Module connector1 x Front Panel Audio connector1 x Front Panel connector1 x Chassis Intrusion connector
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin24 Pin
FeaturesMilitary Class III components: Top quality & stabilityOC Genie II: Auto OC to boost performance in 1 secClickBIOS II: Easy-to-use UEFI BIOS interfaceTHX TruStudio PRO: deliver the fullest audio experienceSupport USB 3.0 & SATA 6Gb/s

Questions about this item

How do I install this board in a standard ATX case, and which power connector is often missed?

Mount the board using the ATX screw pattern, connect the 24-pin ATX power cable, and do not forget the 8-pin CPU power plug near the socket; the system will not post without it.

What maintenance or replacement will this motherboard need over time?

The board has no user-serviceable moving parts; keep the rear I/O dust covers in place and clean the PCI Express slots with compressed air if you swap graphics cards.

Which limit appears first when the system runs under sustained heavy load?

The voltage regulator modules for the LGA 1155 socket have no active cooling, so VRM temperature becomes the limiting factor before the chipset or memory controllers throttle.

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