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The Gigabyte GA-P55-UD3R is an ATX format motherboard supporting Intel LGA1156 format CPUs.

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Excellent price point for a CrossFireX-capable Intel P55 board.

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Higher than average amount of USB, SATA and eSATA connectors.

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Lots of helpful built-in overclocking features for those new to overclocking.

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Very easy to update/flash the BIOS to a newer version.

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Good CPU overclocking--stable, consistent and cool.

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Included documentation is unhelpful, out of date.

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Fairly slow to come out of sleep mode (takes about 20 seconds).

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Unstable RAM overclocking even when clocking up to stock RAM speeds (1800, 2200 MHz).

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CrossFireX setups are limited to x16/x4.

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  • Only 3 words are allowed.


The Gigabyte GA-P55-UD3R is an ATX format motherboard supporting Intel LGA1156 format CPUs. This is similar to the Gigabyte GA-P55-UD3L, but has expanded RAID support and 2 eSATA connectors. The serial and parallel ports have been removed as well. Otherwise they are very similar, with 4 DDR3 sockets supporting up to 16GB of memory and 6 SATA connectors. RAID support allows for RAID 0, 1, 5 and 10 configurations, enabling the motherboard to be used in a home server. Built-in 10/100/1000 Ethernet allows for a fast network connection. On-board audio support is provided in the form of a 7.1 surround sound high definition system that outputs to a coaxial or optical S/PDIF out connector. Up to 14 USB 2.0 ports are supported as well.

  • ATX Form Factor; 30.5cm x 24.4cm
  • Intel LGA1156 CPU slot, support for Intel Core i7 series, Intel Core i5 series
  • 4 x DDR3 DIMM sockets, up to 16 GB of system memory
  • Support for DDR3 2200/1600/1333/1066/800 MHz memory modules
  • Onboard audio: Realtek ALC888, High Definition Audio, 2/ 4/ 5.1/ 7.1-channel
  • Support for S/PDIF In/Out, CD In
  • 10/100/1000 Ethernet, RTL8111D chip
  • 1 x PCI Express x16, 1 x PCI Express x4, 1 x PCI Express x1, 4 x PCI slots
  • Support for ATI CrossFireX technology
  • 6 x SATA 3Gb/s connectors
  • Support for SATA RAID 0, 1, 5, and 10
  • 2 x eSATA 3Gb/s connectors
  • Up to 14 USB 2.0/1.1 ports
  • PS/2 keyboard or PS/2 mouse port, coaxial S/PDIF Out connector, optical S/PDIF Out connector, 10 x USB 2.0/1.1 ports, 2 x eSATA 3Gb/s ports, RJ-45 port, 6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/ Side Speaker Out/Line In/Line Out/Microphone)
  • Support for Microsoft Windows 7/Vista/XP
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