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The Gigabyte GA-P55A-UD3 is an ATX size motherboard that supports Intel CPUs with the LGA1156 configuration.

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Pros

RAID utility and BIOS interface make setup and advanced tweaking a painless experience.

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Pretty cheap for a motherboard with USB 3.0 and SATA 3 support

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Included 'Smart 6' software works as advertised: overclocking is very easy, even for beginners.

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Above average overclocking capabilities (Intel Core i5-760 can be overclocked from stock 2.8GHz to 4GHz with no stability or heating issues).

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Cons

BIOS auto-detection is a little inaccurate, may lead to minor problems fixable only by manual BIOS settings tweaking.

1 agrees

On-board audio gets distorted by other signals in the mobo, creating noise through speakers when HDD is being accessed.

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Setup and size almost make a full tower a must; using this mobo with a mid tower requires a fair amount of research.

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It is common for this mobo's Ethernet port to be DOA.

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Mobo hisses during operation

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Edit

 

The Gigabyte GA-P55A-UD3 is an ATX size motherboard that supports Intel CPUs with the LGA1156 configuration. This is one of the earliest motherboards to directly support the USB 3.0 standard, offering high transfer rates without the need of an add-on card. A total of 10 USB ports are built in, along with built in 10/100/1000 Ethernet support and 7.1 channel audio. Video is not directly supported, as an external graphics card needs to added, but ATI CrossFireX is supported for the use of multiple cards to share the graphics processing load. This, combined with a total of 4 PCI-E slots and a maximum of 16 GB of DDR3 memory may make this a choice for users building a performance PC. 6 SATA connectors allow for multiple hard drives, and a number of RAID configurations are also directly supported.

Features
  • ATX Form Factor; 30.5cm x 24.4cm
  • LGA1156 slot, supports Intel Core i7 series, Intel Core i5 series
  • Intel P55 Express Chipset
  • 4 x DDR3 DIMM sockets, up to 16 GB of memory
  • Support for DDR3 2200/1600/1333/1066/800 MHz memory modules
  • Onboard audio: Realtek ALC892, 2/ 4/ 5.1/ 7.1-channel
  • Support for S/PDIF In/Out, CD In
  • 10/100/1000 Mbit Ethernet through RTL8111E chip
  • PCI Express x16, PCI Express x4 (PCIEX4), 2 PCI Express x1, 3 PCI slots
  • ATI CrossFireX supported
  • 6 x SATA connectors
  • Support for SATA RAID 0, 1, 5, and 10
  • Up to 12 USB 2.0/1.1 ports (8 on the back panel, 4 via the USB brackets connected to the internal USB headers)
  • Up to 2 USB 3.0/2.0 ports on the back panel 
  • PS/2 keyboard/ mouse port, coaxial S/PDIF Out connector, optical S/PDIF Out connector, 8 x USB 2.0/1.1 ports, 2 x USB 3.0 ports, RJ-45 port, 6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/ Side Speaker Out/Line In/Line Out/Microphone)
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