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GIGABYTE P55A-UD3P ATX LGA1156 P55 DDR3 2PCI-E 2PCI GBLAN CrossFireX USB3.0 SATA3 Motherboard

This product can only be exchanged or replaced with the exact same item.
GIGABYTE P55A-UD3P ATX LGA1156 P55 DDR3 2PCI-E 2PCI GBLAN CrossFireX USB3.0 SATA3 Motherboard - 1
Actual product may not be exactly as shown.
GIGABYTE P55A-UD3P ATX LGA1156 P55 DDR3 2PCI-E 2PCI GBLAN CrossFireX USB3.0 SATA3 Motherboard - 47579_l.jpg GIGABYTE P55A-UD3P ATX LGA1156 P55 DDR3 2PCI-E 2PCI GBLAN CrossFireX USB3.0 SATA3 Motherboard - 47579_1.jpg Customer Photos (0)
Reg. Price: $172.98  CAD
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   Shipping Weight:   5 lbs
   Part #: GA-P55A-UD3P

Features    [ Edit | History ]

Ultra Durable 3 GA-P55A-UD3P Desktop Board featuring 2 ounces of copper for both the Power and Ground layers which dramatically lowers system temperature by delivering a more efficient spreading of heat from critical areas of the motherboard such as the CPU power zone throughout the entire PCB. GIGABYTE's Ultra Durable 3 also lowers the PCB impedance by 50%, which helps to reduce electrical waste and further lowers component temperatures.

Quick Specs:
Package Contents
  • Ultra Durable 3 GA-P55A-UD3P Desktop Board
  • User Manual
  • Quick Installation Guide
  • 1 x IDE Cable
  • 4 x SATA 3Gb/s Cables
  • I/O Shield
Maximum Memory 16 GB
Form Factor ATX
Processor Supported Core i7 Core i5 Core i3 Pentium
RAID Levels 0 1 5 1+0 JBOD
Controller Type Floppy Controller Serial ATA/600 Ultra ATA/133 (ATA-7)
Processor Socket Socket H LGA-1156
Memory Technology DDR3 SDRAM
Processor Technology Enhanced SpeedStep Technology
Memory Standard DDR3-1600/PC3-12800 DDR3-1333/PC3-10600 DDR3-1066/PC3-8500 DDR3-800/PC3-6400
Width 12"
Depth 9.6"
Green Compliant Yes
Green Compliance Certificate/Authority RoHS WEEE
64-bit Processing Yes
Chipset Manufacturer Intel
Chipset Model P55 Express
Number of Memory Slots 4
Number of PCI Slots 3
Multi GPU Supported CrossFireX
Audio Channels 7.1
Gigabit Ethernet Yes
Number of IDE Interfaces 1
Number of SATA Interfaces 10
Number of PCI Express x1 Slots 2
RAID Supported Yes
Number of Total Expansion Slots 7
Number of PCI Express x16 Slots 2
Network (RJ-45) Yes
Total Number of USB Ports 10
Number of USB 3.0 Ports 2
PS/2 Port Yes
Number of PS/2 Ports 1
Total Number of Onboard USB Ports 2
Onboard S/PDIF Header Yes
Total Number of PCI Express Slots 4

Specifications    [ Edit | History ]
     Audio Channels: 7.1
     Sound Controller Manufacturer: Realtek
     Sound Controller Model: ALC889
General Information  
     Brand Name: Gigabyte
     Manufacturer: GIGABYTE Technology, Inc
     Manufacturer Part Number: GA-P55A-UD3P
     Manufacturer Website Address:
     Product Model: GA-P55A-UD3P
     Product Name: Ultra Durable 3 GA-P55A-UD3P Desktop Board
     Product Type: Desktop Motherboard
I/O Controller  
     Controller Type: Floppy Controller
Serial ATA/600
Ultra ATA/133 (ATA-7)
     RAID Levels: 0
     RAID Supported: Yes
I/O Expansions  
     Number of PCI Express x1 Slots: 2
     Number of PCI Express x16 Slots: 2
     Number of PCI Slots: 3
     Number of Total Expansion Slots: 7
     Total Number of PCI Express Slots: 4
     Audio Line In: Yes
     Audio Line Out: Yes
     eSATA: Yes
     Microphone Port: Yes
     Network (RJ-45): Yes
     Number of PS/2 Ports: 1
     Number of S/PDIF Out Ports: 2
     Number of USB 2.0 Ports: 8
     Number of USB 3.0 Ports: 2
     PS/2 Port: Yes
     S/PDIF: Yes
     Total Number of USB Ports: 10
     Maximum Memory: 16 GB
     Memory Standard: DDR3-1600/PC3-12800
     Memory Technology: DDR3 SDRAM
     Number of Memory Slots: 4
     Green Compliance Certificate/Authority: RoHS
     Green Compliant: Yes
     Package Contents:
  • Ultra Durable 3 GA-P55A-UD3P Desktop Board
  • User Manual
  • Quick Installation Guide
  • 1 x IDE Cable
  • 4 x SATA 3Gb/s Cables
  • I/O Shield

Network & Communication  
     Gigabit Ethernet: Yes
Onboard Interfaces  
     Number of IDE Interfaces: 1
     Number of SATA Interfaces: 10
     Onboard Audio Header: Yes
     Onboard LEDs Header: Yes
     Onboard S/PDIF Header: Yes
     Total Number of Onboard USB Ports: 2
Physical Characteristics  
     Depth: 9.6" (244 mm)
     Form Factor: ATX
     Width: 12" (305 mm)
Processor & Chipset  
     64-bit Processing: Yes
     Chipset Manufacturer: Intel
     Chipset Model: P55 Express
     Multi GPU Supported: CrossFireX
     Processor Socket: Socket H LGA-1156
     Processor Supported: Core i7
Core i5
Core i3
     Processor Technology: Enhanced SpeedStep Technology

Gigabyte GA-P55A-UD3P Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Gigabyte GA-P55A-UD3P reviews.
Experience: 3 Months
 Verified Owner
Stability, Gigabyte, SATA3 + USB3 (with limitations)
SATA3 + USB3 limitations
Solid board with a decent set of features for mid-pack systems. The crippled USB3 and SATA3 is not ideal but not a deal breaker. You'd probably be looking elsewhere for a high end gaming setup anyway.

I've had no complaints using this board. There was one hiccup where the onboard LAN wouldn't come out of its green function when switching back and forth between Windows 7 and Linux.. but that resolved itself after a few reboots and hasn't show up again since.

Experience: 50 Days
 Verified Owner
Good price for performance, USB3.0/Sata3, many features, great overclocking ability
Crossfire only x16/x4
No issues whatsoever with i5 750. Good mobo for the price. Definitely within the price range for basic builds.

Experience: 2 Months
 Verified Owner
Good Performance/Price ratio
Many Features
SATA3/USB3.0 ready
I have never bought a Gigabyte mobo but this one does impress me. It has SATA3 and USB3.0 support so it is ready for future HDD and peripheral upgrades. The only thing that I don't like is based on Intel, LGA1156 is short-lived, but it cannot really blame on the mobo. You cannot ask too much for a ~$150 mobo about future-proof.

Experience: 2 Weeks
 Verified Owner
Not very many :(, It works It has a MIR and has a mouse/keyboard port which is really cool. Also it has two USB 3.0 ports which I think will come in handy soon! The E-Sata Ports are nice as well. Its blue :).
The IO Plate has e-Sata Upside down as well as one of the USB 2.0 Pictures. The Sata Ports are NOT 90 Degrees and they block you from using Cross Fire (well at least with a big long card). Board is a little small the boot screen seems to take awhile but I'm not sure if that has anything to do with that. Its definitely missing some features I would have other wise enjoyed. Also they cut Blue Tooth Dongle off from this. And a few more Fan Ports MAYBE would be nice. Also it has NO firewire Support which is a big no no Since my case has one on the frontAlthough I'd never use it I would still like to have all live ports on my Case.
Overall a good Mobo But next time I would look deeper into buying a different Gigabyte Mobo Over this one. I like Gigabyte but this Mobo had to many negatives for me to buy it again. WORKS FINE, everything NECESSARY is on it but the IO plate Glitch REALLY annoys me.

Over all, If your just building a regular PC nothing special no Dual Cards then your fine. But you can't do Dual Cards.

So the CrossFireX support is kind of a lie. But other then that awesome mobo so far.

Experience: 20 Days
 Verified Owner
Good price, work very well, has many usb ports
I got my core i5 and my HD 5750 gpu and it installs realy well. Very good quality price. Has many usb ports. Gigabyte is what i'm looking for.

Experience: 2 Weeks
 Verified Owner
Great documentation
Bios features
none noted so seems to be running perfectly
So I got this mobo to go with an i5 750 and a Radeon HD 5770 installed very easily. Flashing the bios for an update  to F10 was easy as pie, and with the dual bios feature, I wasn't worried about doing it. I used sbios for the update . I really have no complaints, lots of room for after market coolers around the cpu and memory slots. The only thing to watch out for is to make sure you know what rev. your mobo is. I thought I was buying a rev 2.0 when in fact mine was a 1.0. No big deal, but the update s are different and the list of supported memory modules is also different. I would recommend this to anyone building a slightly above mid-line multi-tasking computer.

Experience: 3 Weeks
 Verified Owner
-quality components
-made by gigabyte
not full USB and SATA 3.0. They run off the PCI-E path so if you use them your video card on the pci-e slot will get throtled down from 16x to 8x or maybe even lower.
Solid Board. Colour scheme is kind of funky but its fine. I have not had any problems with it yet. Used it in a friend's build. Used G skill 1.5 ram and i7 860. Have not tried over clocking. Everything worked from the get go without any hitches. I disabled USB 3.0 and sata 3.0 in the bios.

Experience: 3 Months
 Verified Owner
Good price, works great, nice amount of ports / support for usb 3.0
None that I know of
Bought this three months ago when I was building my new rig. Works perfectly with my i5 750 using the lga1156 socket. Nice price point, excellent for what I needed. Also glad that I'll be able to use usb 3.0 when that comes out.

Experience: 3 Days
Very solid board, got to 4.01Ghz with only 1.3v and 1.17vtt passed hours of tests.
Great board, it's a day and night difference compares to the POS ECS one I had. Rock solid and low voltage at 4.01Ghz.

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Product Warranty
First 30 days limited warranty through The remainder of the 3 year warranty is provided directly by the manufacturer.

Currently Gigabyte accepts end users’ requests on RMA service.
Motherboards, Video cards, servers and Rackmount server boards carry three years limited warranty.

Warranty Effective On Date of Manufacture

Gigabyte determines warranty based on the manufacture date. The manufacture date can be verified by the serial number found on the product. The first four digits after "SN" determine the year and week of manufacturing date. For example:

"01)04719331729028(21) SN0213030585" represents the 13th week of 2002

RMA Request Procedures and Guidelines

  • All RMA request forms must be completed in order to obtain a RMA number

  • RMA request with missing or incorrect serial number(s) may result in a delayed process or a rejection of request

  • Any model discrepancy for received items may result in a delayed processing timeProducts received with no RMA number may delay processing or refusal
    (Gigabyte will not be responsible for items received without proper information)
  • No cross shipping or advanced replacements under any circumstances

  • Products will either be repaired or replaced at our discretion

  • Replacements may include new or refurbished products
    (Replacements will be for the exact or equivalent product)
  • Average turnaround time will be 2-3 business working weeks upon receipt (applies to quantities not exceeding 20 pieces)
  • If the information on your request varies from the actual item(s) received, RMA will be based on the actual item(s) received
  • RMA numbers will be valid for 30 days after issued date
  • Gigabyte will provide one way freight via UPS or FedEx ground free of charge
  • For consecutive violation for No Trouble Found (NTF), a testing fee per NTF board or system may apply.

Warranty Period by Product

  • Motherboards
    • All motherboards carry a 3 year limited warranty (First 2 years parts & labor, 3rd year parts only)
  • Graphic Accelerator Cards (VGA)
    • All graphic cards carry a 3 year limited warranty (First 2 years parts & labor, 3rd year parts only)
  • Servers(Server Boards/Barebone Server System)
    • Server Boards carry a 3 years limited warranty (First 2 years parts & labor, 3rd year labor only)   
    • Rackmount server boards carry a 3 year limited warranty (First 2 years parts and labor, 3rd year labor only)
    • Rackmount components carry a 2 year limited warranty
  • PC Barebones System
    • Motherboards assembled with barebones systems carry a 3 years limited warranty (1st year parts & labor, 2nd and 3rd year labor only)
      * Gigabyte shall provide the fees/charges for parts upon testing of motherboards in their 2nd and 3rd year of warranty
  • Peripherals (Coolers, Keyboards, Mouse, Optical Devices, etc.)
    • All peripherals carry a 1 year limited warranty
  • Notebook
    • All notebooks carry a 1 year limited warranty
  • Wireless and Networking Products
    • All wireless and networking products carry a 1 year limited warranty

Please register at your RMA account!

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