GA-P55-USB3 (rev. 1.0)
other version : rev. 2.0
Intel® P55 Chipset
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On/Off Charge Support
GIGABYTE On/Off Charge technology that enables faster iPhone, iPad and iPod Touch charging. A derivative of GIGABYTE's highly acclaimed 3x USB Power feature, On/Off Charge technology allows iPhone, iPad and iPod touch devices to draw more current from GIGABYTE motherboard USB ports than standard USB ports allow, with the added benefit that the PC can be on, in standby mode or even off...more
*Due to certain mobile phone limitations, users may need to connect the mobile phone to their PC before the PC enters S4/S5 mode to enable a quick charge from non On/Off Charge USB ports. Charging results may vary by model.
On/Off Charge Driver download
USB 3.0 Support
The GIGABYTE USB3.0 series motherboards support the latest generation SuperSpeed USB 3.0 technology made possible through an onboard NEC uPD720200 host controller. With superfast transfer rates of up to 5 Gbps, users are able to experience an almost a 10x improvement over USB 2.0. Additionally, backwards compatibility with USB 2.0 assures users of long term use of their legacy USB 2.0 devices. The onboard NEC SuperSpeed USB 3.0 technology also provides new power management features that include increased maximum bus power and device current draw to better accommodate power-hungry devices.


* USB 3.0 10x performance is a maximum theoretical value. Actual performance may vary by system configuration.
3x USB Power Boost
GIGABYTE motherboards feature a 3x USB power boost, delivering greater compatibility and extra power for USB devices. GIGABYTE’s unique USB power design is also able to efficiently regulate output over the full voltage range, which greatly enhances USB device compatibility. In addition, dedicated lower resistance fuses ensure lower voltage drops, and provide more stable and plentiful power delivery.
Ultra Durable 3

Ultra Durable 3
GIGABYTE Ultra Durable 3 design, 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. A 2oz Copper layer design also provides improved signal quality and lower EMI (Electromagnetic Interference), providing better system stability and allowing for greater margins for overclocking...more
Benefits of 2 oz Copper PCB



• Cooler than traditional motherboards
• Enhanced durability
• Improved energy efficiency
• Greater margins for overclocking... more
Smart 6- A Smarter way for PC system Management
GIGABYTE Smart 6™ is designed with user-friendliness in mind, and offers a combination of 6 innovative software utilities that provide easier and smarter PC system management. Smart 6™ allows you to speed up system performance, reduce boot-up time, manage a secure platform and recover previous system settings easily with a click of the mouse button.


Smart QuickBoot
No more waiting for PC Boot up

Smart DualBIOS
Smart personal reminder
Smart QuickBoost
One-click Overclocking
Smart Recorder
Your PC's Watch Dog
Smart Recovery
Reverse time for you
Smart TimeLock
Time Controller for PC
Dynamic Energy Saver™ 2
GIGABYTE Dynamic Energy Saver™ 2 incorporates a host of intelligent features that use a proprietary hardware and software design to considerably enhance PC system energy efficiency, Reduce power consumption and deliver optimized auto-phase-switching for the CPU, Memory, Chipset, VGA, HDD, and fans with a simple click of button.
Cloud OC

GIGABYTE Cloud OC is a free overclocking application that facilitates PC overclocking through any web browsing capable device such as a smart phone, iPad, iPhone, Netbooks or notebook PC. Being browser based it connects via wireless Internet, Bluetooth or through an Ethernet cable and its many functions are categorized into three tabs: Tuner, System Info and Control...more
Cloud OC download

Hotkey OC
GIGABYTE Hotkey OC allows users to create and save various profiles that can be adopted for different benchmarks. Hotkey OC then allows users to jump between these profiles on the fly so that the best profile for each segment within the benchmark can be used to optimize scores and boost overall performance. So, for example, when running 3DMark 06 the 1st profile might be optimized for graphics and can be used for the first two graphics tests, then the next two tests can utilize the 2nd profile which might be optimized for CPU tests, and one could jump back to the 1st profile again for the final two graphics (shader) tests...more
Hotkey OC download
Intel® Core i7/ Core i5 LGA 1156 Processors



The Intel brand new computing architecture based on the innovation of micro-architecture transforms 3-chip solutions to a 2-chip platform. The next generation Intel® Core™ i7/ Core™ i5 processors with LGA1156 package integrate graphics and memory controller to support dual channel DDR3 memory. Supporting Intel Turbo Boost technology and Hyper-Threading Technology, Intel® Core™ i7/ Core™ i5 processors provide the overwhelming performance with optimized power efficiency.
DDR3 2200+ Support
P55-USB3 support Intel Core™ i7/ Core™ i5 processors delivering native support for DDR3 memory up to 2200+MHz by the enhanced design of GIGABYTE, Intel Core™ i7/ Core™ i5 processors feature the memory controller integrated directly into the processor die, rather than as part of the Northbridge as in previous generations, allowing for faster memory performance.
* Please refer "Memory Support List" for memory support information
XHD (eXtreme HardDrive)-Accelerating hard drive performance with ease
Accelerating system performance is made easy with the user friendly GIGABYTE eXtreme Hard Drive (X.H.D). GIGABYTE eXtreme Hard Drive (X.H.D) provides a quick and easy way to boost your hard drive performance simply by adding another hard drive.
AutoGreen- Greening your PC via Bluetooth cellphone
AutoGreen technology can automatically save power for you simply by your bluetooth cell phone when you are away from your computer.
Note: GIGABYTE motherboards do not include a Bluetooth® receiver; the addition of a 3rd party Bluetooth receiver is required.
Multi-display support with ATI CrossFireX
P55-USB3 supporting ATI CrossFireX delivers the ultimate in graphics performance for gaming enthusiasts who demand the highest frame rates without compromising on resolution.
Norton™ Internet Security
Fast, comprehensive, and up-to-the-minute protection against online threats. It safeguards your computer, identity, and home network without slowing you down. It sets a new standard for speed and makes online shopping, banking, and browsing safer and more convenient than ever.
Qualified for Windows® 7
The motherboard qualified for WHQL (Windows Hardware Quality Labs) certification of Windows 7 from Microsoft®, setting the standard for future Windows 7 certified motherboards...more
ErP Lot 6 support
The ErP (as known as Energy-Related Products Directive) is part of new European Union's environment regulations. ErP established is based on the concern of environmental issues regards electronic devices been gained popularity and how to improve energy efficiency for better and greener life. GIGABYTE presents standard motherboards to help you effectively improving system performance and saving more energy.
* The entire materials provided herein are for reference only. GIGABYTE reserves the right to modify or revise the content at anytime without prior notice.
* Advertised performance is based on maximum theoretical interface values from respective Chipset vendors or organization who defined the interface specification. Actual performance may vary by system configuration.
* Due to standard PC architecture, a certain amount of memory is reserved for system usage and therefore the actual memory size is less than the stated amount.
Genuine Windows® software is published by Microsoft and licensed and supported by Microsoft or an authorized licensor. Genuine software helps protect you from the risks of counterfeit software, provides you with special benefits and the experience and support you expect. Learn more by visiting www.microsoft.com/genuine.