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ATX motherboard with LGA 1155 socket, black PCB and silver heatsinks

ASUS

ASUS Z77-A LGA 1155 Intel Z77 ATX Motherboard

SKU CH-7SBK-RBDD1

Supports LGA 1155 Intel CPUs with Z77 chipset, DDR3 up to 2400 MHz, dual-channel 32 GB memory, one PCIe 3.0 x16 slot, two SATA 6 Gb/s ports, 8-channel Realtek ALC887 audio.

  • CPU Socket TypeLGA 1155
  • CPU TypeCore i7 / i5 / i3 / Pentium / Celeron (LGA1155)
  • ChipsetIntel Z77
  • Onboard Video ChipsetSupported only by CPU with integrated graphic
  • Number of Memory Slots4x240pin
  • Memory StandardDDR3 2400(O.C.)/2200(O.C.)/2133(O.C.)/1866(O.C.)/1600/1333/1
  • Supports up to 32GB DDR3 memory for demanding workloads
  • Overclocks DDR3 to 2400MHz for faster data rates
  • PCI Express 3.0 x16 slot enables modern GPU bandwidth
  • Two SATA 6Gb/s ports accelerate SSD and HDD speeds
  • Realtek ALC887 delivers 8-channel high-definition audio

ASUS Z77-A LGA 1155 Intel Z77 ATX Motherboard

This motherboard uses the Intel Z77 chipset and fits an LGA 1155 socket. It accepts Core i7, i5, i3, Pentium and Celeron processors. The board provides four DDR3 memory slots supporting speeds up to 2400(O.C.) and a maximum capacity of 32GB in dual-channel mode.

Built for overclocking with unlocked LGA 1155 CPUs

Digital power design delivers precise voltage control for the CPU and integrated graphics. This suits enthusiasts who want to tune frequencies on third-generation Core processors. Builders using locked processors or needing newer socket types should consider a different platform.

Single PCI Express 3.0 x16 slot for graphics

The board includes one PCI Express 3.0 x16 slot active with a third-generation CPU, plus one PCI Express 2.0 x16 slot and two PCI Express x1 slots. Two SATA 6Gb/s ports and Realtek 8111F Gigabit LAN complete the main I/O.

Highlights

  • Supports up to 32GB DDR3 memory for demanding workloads
  • Overclocks DDR3 to 2400MHz for faster data rates
  • PCI Express 3.0 x16 slot enables modern GPU bandwidth
  • Two SATA 6Gb/s ports accelerate SSD and HDD speeds
  • Realtek ALC887 delivers 8-channel high-definition audio

Specifications

BrandASUS
ModelZ77-A
CPU Socket TypeLGA 1155
CPU TypeCore i7 / i5 / i3 / Pentium / Celeron (LGA1155)
ChipsetIntel Z77
Onboard Video ChipsetSupported only by CPU with integrated graphic
Number of Memory Slots4x240pin
Memory StandardDDR3 2400(O.C.)/2200(O.C.)/2133(O.C.)/1866(O.C.)/1600/1333/1066
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 Slots2 x PCI Slots
Serial ATA (SATA)2 x SATA 6Gb/s
SATA RAID0/1/5/10
Audio ChipsetRealtek ALC887
Audio Channels8 Channels
LAN ChipsetRealtek 8111F
Max LAN Speed1Gbps
Back I/O Ports1 x HDMI / 2 x PS/2 / 2 x USB 3.0 / 4 x USB 2.0/1.1
PS/22
Video PortsD-Sub + DVI
HDMI1 x HDMI
USB 3.02 x USB 3.0
USB 1.1/2.04 x USB 2.0
Audio Ports3 Ports
Onboard USB2 x USB 3.0 + 4 x USB 2.0
Other Connectors1 x COM port(s) connector(s) 1 x CPU Fan connector(s) (1 x 4 -pin) 2 x Chassis Fan connector(s) (2 x 4 -pin) 1 x Power Fan connector(s) (1 x 3 -pin) 1 x S/PDIF out header(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x Front panel audio connector(s) (AAFP) 1 x System panel(s) 1 x Clear CMOS jumper(s)
Form FactorATX
Dimensions (W x L)12" x 8.4"
Power Pin24 Pin

Questions about this item

How much power does the Z77-A draw and how hot or loud does it get when running 24/7?

The board uses a digital CPU and iGPU power design with ultra-fast sensing to deliver precise Vcore voltages, reducing waste heat; actual draw, temperatures and fan noise depend on the installed processor, cooler and case airflow.

Which components must I already own for the Z77-A to function?

You need an LGA 1155 processor (Core i7/i5/i3/Pentium/Celeron), DDR3 memory modules up to 32 GB across four slots, a graphics card or a CPU with integrated graphics for video output, storage drives for the two SATA 6Gb/s ports, and an ATX power supply with 24-pin and 4/8-pin CPU connectors.

Will my existing PCI and PCIe 2.0 cards work in the Z77-A alongside newer parts?

Yes — the board provides two legacy PCI slots, one PCIe 2.0 x16 slot, two PCIe x1 slots and one PCIe 3.0 x16 slot (active with a third-generation Core CPU), so older expansion cards can be used together with modern GPUs.

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