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ATX motherboard with black PCB, silver heatsinks, four DDR3 slots, two PCIe x16 slots, rear I/O panel with HDMI, DisplayPort, USB ports

GIGABYTE

GIGABYTE GA-Z77X-UD3H LGA 1155 Intel motherboard

SKU CH-A0VV-8EMPK

ATX board for LGA 1155 CPUs with Intel Z77 chipset, four DDR3 slots up to 32 GB, dual PCIe 3.0 x16, six USB 3.0 ports and 8-channel audio

  • CPU Socket TypeLGA 1155
  • CPU TypeCore i7 / i5 / i3 (LGA1155)
  • ChipsetIntel Z77
  • Number of Memory Slots4x240pin
  • Memory StandardDDR3 2666(OC)/1600/1333/1066
  • Maximum Memory Supported32GB
  • Supports Core i7, i5 and i3 processors on LGA 1155 socket
  • Dual-channel DDR3 memory up to 32 GB across four 240-pin slots
  • Two PCI Express 3.0 x16 slots for multi-GPU configurations at x16 or x8 speeds
  • Eight-channel audio via VIA VT2021 codec with optical S/PDIF output
  • Six USB 3.0 ports plus two eSATA 6 Gb/s connectors on the rear I/O panel

Socket LGA 1155 Z77 motherboard

The GIGABYTE GA-Z77X-UD3H is an ATX board built around the Intel Z77 chipset for second- and third-generation Core i7, i5 and i3 processors. Four 240-pin slots accept DDR3 memory at 1066, 1333, 1600 or 2666 MT/s when overclocked, topping out at 32 GB in dual-channel mode.

Standard ATX layout with legacy PCI slot

Installation follows the usual ATX pattern: nine mounting holes, a 24-pin and an 8-pin power connector, and front-panel headers in the expected positions. The single legacy PCI slot sits below the three PCIe x1 slots, so a long card in the second PCIe 3.0 x16 slot can block the PCI slot; plan card order before tightening screws.

Dual x16 PCIe 3.0 and six USB 3.0 ports

Two PCI Express 3.0 x16 slots run at x16 and x8, giving ample bandwidth for twin graphics cards, while a third x16 slot is wired at x4 via PCIe 2.0. Six rear USB 3.0 ports, two eSATA 6 Gb/s ports and four internal SATA 3 Gb/s ports handle most storage needs; the onboard mSATA connector disables one internal SATA port when populated.

Points forts

  • Supports Core i7, i5 and i3 processors on LGA 1155 socket
  • Dual-channel DDR3 memory up to 32 GB across four 240-pin slots
  • Two PCI Express 3.0 x16 slots for multi-GPU configurations at x16 or x8 speeds
  • Eight-channel audio via VIA VT2021 codec with optical S/PDIF output
  • Six USB 3.0 ports plus two eSATA 6 Gb/s connectors on the rear I/O panel

Caractéristiques

BrandGIGABYTE
ModelGA-Z77X-UD3H
CPU Socket TypeLGA 1155
CPU TypeCore i7 / i5 / i3 (LGA1155)
ChipsetIntel Z77
Number of Memory Slots4x240pin
Memory StandardDDR3 2666(OC)/1600/1333/1066
Maximum Memory Supported32GB
Channel SupportedDual Channel
PCI Express 3.0 x162 (x16, x8)
PCI Express 2.0 x161 @x4
PCI Express x13 x PCI Express x1
PCI Slots1 x PCI Slot
Serial ATA (SATA)2 x SATA 6Gb/s
SATA RAID0/1/5/10
Audio ChipsetVIA VT2021
Audio Channels8 Channels
Max LAN Speed1Gbps
Back I/O Ports1 x DisplayPort / 1 x HDMI / 1 x Optical S/PDIF Out / 1 x PS/2 Keyboard/Mouse Combo / 2 x eSATA 6GB/S / 6 x USB 3.0
PS/21 x PS/2 keyboard/mouse port
Video PortsD-Sub + DVI
HDMI1 x HDMI
DisplayPort1 x DisplayPort
USB 3.06 x USB 3.0
eSATA2 x eSATA 6Gb/s
S/PDIF Out1 x Optical
Audio Ports6 Ports
Onboard USB2 x USB 3.0 + 6 x USB 2.0
Other Connectors1 x 24-pin ATX main power connector/1 x 8-pin ATX 12V power connector/1 x PCIe power connector/1 x mSATA connector/1 x CPU fan header/4 x fan headers/1 x front panel header/1 x front panel audio header/1 x S/PDIF Out header/1 x Clear CMOS jumper/1 x Trusted Platform Module (TPM) header/1 x power button/1 x reset button/1 x Clear CMOS button/1 x Voltage Measurement Points/1 x BIOS Switch
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin24 Pin
FeaturesThe PCI Express x16 slots support up to PCI Express 2.0 standard when an Intel 32nm (Sandy Bridge) CPU is installed.//GIGABYTE All Digital Power Engine//GIGABYTE 3D Power Utility//GIGABYTE 3D BIOS//3rd Generation Intel Core processors//Designed for PCI Express Gen.3 Support//Intel Rapid Start Technology//Intel Smart Connect Technology//Onboard OC Features//GIGABYTE Ultra Durable 4 - Insist on an Ultra Durable Motherboard//Lucid Universal MVP Support//Switchable Graphics//GIGABYTE EZ Smart Response

Questions sur cet article

How do I confirm the board is posting correctly after installing a Core i7 LGA 1155 CPU and DDR3 memory?

Power on the system and watch for the BIOS splash screen or listen for a single beep from the onboard speaker; if the display shows the UEFI setup screen or boots to your OS installer, the motherboard is operating as intended.

What components are included with the GA-Z77X-UD3H and what must I source separately?

The box contains the ATX motherboard, I/O shield, SATA cables, driver disc and manual; you will need to purchase an LGA 1155 processor, DDR3 DIMMs, a power supply, storage drives and a chassis separately.

Which memory speed should I select for the four 240-pin slots — 1066, 1333, 1600 or 2666 OC?

For plug-and-play stability choose DDR3 1600 modules; 2666 requires manual overclocking in the BIOS and compatible high-performance DIMMs, while 1066 and 1333 will run at lower bandwidth.

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