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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.

  • ProcessorCore i7 / i5 / i3 / Pentium / Celeron (LGA1155)
  • ChipsetIntel Z77
  • Form factorATX
  • CPU socketLGA 1155
  • Onboard video chipSupported only by CPU with integrated graphic
  • Memory slot count4 × 240pin
  • 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.

How it compares

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

Price $48.99
Cheaper than about 86% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Model nameZ77-A
Processor
ProcessorCore i7 / i5 / i3 / Pentium / Celeron (LGA1155)
CPU socketLGA 1155
ChipsetIntel Z77
Memory
Memory slot count4 × 240pin
Supported memoryDDR3 2400(O.C.)/2200(O.C.)/2133(O.C.)/1866(O.C.)/1600/1333/1066
Max supported RAM32 GB
Memory channelsDual Channel
Storage
SATA ports2 x SATA 6Gb/s
SATA and RAID support0/1/5/10
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Audio chipRealtek ALC887
Sound channels8 Channels
Connectivity
Ethernet controllerRealtek 8111F
Maximum network speed1 Gbit/s
Ports & slots
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x1 slots2 x PCI Express x1
PCI slots2 x PCI Slots
Rear panel ports1 x HDMI / 2 x PS/2 / 2 x USB 3.0 / 4 x USB 2.0/1.1
PS/2 ports2
Video connectorsD-Sub + DVI
HDMI ports1 x HDMI
USB 3.0 ports2 x USB 3.0
USB 2.0 ports4 x USB 2.0
Audio jacks3 Ports
Onboard USB headers2 x USB 3.0 + 4 x USB 2.0
Power
Power connectors24 Pin
Size & build
Form factorATX
Width and length12 in × 8.4 in
More details
PCI express 2.0 x161 x PCI Express 2.0 x16

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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