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P55A-GD55

Intel® P55-based mainboard

• OC Genie: Auto OC to boost performance in 1 sec
• DrMOS: 400% faster phase switching, 90% better power efficiency
• APS (Active Phase Switching) offers more than 93% power saving
• Winki 2.0 provides an easy-to-use internet environment
• Support USB 3.0 & SATA 6Gb/s

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MSI P55A-GD55 Front View
MSI P55A-GD55 Lateral View
MSI P55A-GD55 Lateral View
MSI P55A-GD55 Back Panel
MSI P55A-GD55 Color Box

The product picture may differ from the actual product. Only for your reference.
The specifications may differ from areas. Please check with your local dealers.

OC Genie with Super Unlock

Push to overclock in 1 second

MSI’s original invention, a fully automatic, smart overclocking chip.
It will automatically detect the optimal settings for your individual system
Super Unlock= OC Genie + Auto Unlock CPU Ratio
Support Intel Unlocked CPU (Core i7-875K & Core i5-655K)
Advantages

1. 300% higher than Turbo Boost
2. Overclock 4 core B-clock & Ratio by OC Genie
3. Automatically overclock CPU performance to 4GHz

*To enable OC Genie, we suggest you using the new 1.65V XMP memory modules and a high efficiency CPU cooler.
*While you enable OC Genie to detect your system configuration please don’t turn on any parts of V-switch simultaneously. That behavior would offer too much voltage for device and would be possible to cause some damage of device.

DrMOS

1 Phase DrMOS > 4 Phase Traditional MOSFET

3-in-1 server class power component, 400% faster than traditional MOSFET
Offers excellent energy-saving capability and high-computing performance.
Advantages
.
1. High Efficiency: Up to 96%
2. Efficiency Increase: +38.3%
3. Lower Power Loss: -4.01W (64% Max Saving)

APS

APS is Active Phase Switching, that is complete function to Control Power Demand With Switcing Dynamically, it’s for CPU, Memory and Chipset PWM.

Benefits:
Saving Power under Variable Loading.
Power Usage More Efficiency.

Features

• Overclocking in few seconds
• Automatically detect best overclocking configuration
• Optimized for best system performance

• Excellent energy-saving capability and offers high-computing performance.
• Provide superior energy-saving function and maintain an ultimate low temperature operation.
• Comes with three incredible features.

• APS is Active Phase Switching is complete function to Control Power Demand With Switcing Dynamically, it’s for CPU, Memory and Chipset PWM.
• Saving Power under Variable Loading.
• Power Usage More Efficiency.

• Support next-generation SATAIII, up to 6Gbps bandwidth
• Double the data transfer rate of SATAII (3Gbps)

• Revolutionary SuperSpeed USB 3.0, 10x faster than USB 2.0
• Up to 5Gbps bandwidth, boost data transfer rate between PC and USB device

• Instant CPU Base Clock adjustment
• Hardware low latency control
• Attain hardware overclocking performance at all circumstances

• Universal charger utility for Apple iPad, iPhone, iPad
• Faster iPad charging speed
• Compatible with all MSI Mainboards

• Real Time FSB tuning- FSB value change in the BIOS instant!
• Unlimited Turning Segments
• Easy Use – Just Rotate the knob!!!

• Faster and Flexible and instant
• If BIOS crash, it still can boot from USB Drive
• Update BIOS from USB Drive by M-Flash Fucntion

MSI Power eSATA. Normally eSATA devices need extra power via an adapter or an extra USB cable. This combo port supplies the needed power, so no extra USB cable for power is needed. MSI Power eSATA is 8x faster in transferring data than normal USB ports.

• With the ESD dual-current protection chip, USB Safeguard can ideally protect your motherboard from the potential damage caused by static electricity when inserting USB devices.

• Longer lifespan than electrolytic capacitors
• Endurable to operation under higher frequency & temperature
• Avoid exploding capacitors to cause mainboards failure

• The loss-less content protection technology with full-rate audio enjoyment from Blue-ray Disc
• Support for 24-bit / 192kHz sample rate offers high quality digital decoders and speakers
• support 7.1 channels playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel stereo outputs

• Easy connect to front panel & chassis cable
• 2x USB, IEEE 1394, front panel (JFP1/2)& audio(JAUD1) M-connector in the package
• Easy to tell the definition of each pin

The MSI Live Update online is designed to automatically download and update the BIOS and driver when there’s a new version online. It helps reduce the risk of getting the wrong file and minimize the trouble of searching the files from MSI website.

• Equip with 2 or more PCIe x16 slots, ATI CrossFire Ready.
• The ultimate multi-GPU performance gaming platform.
• Provides 2.7x faster performance than single graphic card solution.

Live Update 4 is a single utility software that automatically checks BIOS, driver and utility updates and installs for you , which can save your time for searching and lower the risk while updating.

Specifications

CPU

• Supports Intel® i3 / i5 / i7 based processors in LGA1156 package.
Please refer to CPU Support for compatible CPU; the above description is for reference only.

Chipset

• Intel® P55 Chipset
- Supports QPI up to 6.4GT/s
- Hi-Speed USB (USB2.0) controller, 480Mb/sec.
- 6 SATAII ports with transfer rate up to 3Gb/s.
- PCI Master v2.3, I/O APIC.
- ACPI 2.0 compliant.
- Serial ATA RAID 0/1/5/10.
- Integrated AHCI controller.

Main Memory

• Supports four unbuffered DIMM of 1.5 Volt DDR3 1066/1333/1600*/1800*/2000*/2133* (OC) DRAM, 16GB Max
- Supports 1Gb/ 2Gb/ 4Gb DRAM size
- Supports Dual channel mode

Slots

• 2 PCI Express gen2 x16 slots
- If two graphics cards are installed at PCI_E1 & PCI_E2 slots, these two PCIE x16 lanes will auto arrange from x16/ x0 to x8/ x8
- supports ATI® Crossfire™
• 3 PCI Express gen2 x1 slots
• 2 PCI slots, support 3.3V/ 5V PCI bus Interface

On-Board IDE/SATA

• One Ultra DMA 66/100/133 IDE controller integrated in JMicron® 363.
- Supports PIO, Bus Master operation modes.
- Can connect up to two Ultra ATA drives.

• SATAII /SATAIII controller integrated in Intel P55/Marvell® SE9128 / JMicron 363 chipsets

- Up to 3Gb/s transfer speed.
- Supports six SATAII ports by P55
- Supports two SATAIII ports by Marvell SE9128, up to 6Gb/s, support SATA RAID 0/1.
- Supports two eSATA ports (back) by JMicron 363, support SATA RAID 0/1/JBOD.
- Supports AHCI controller with AHCI / SATA RAID 0/1/5/10 by P55.

MSI Reminds You...
• The RAID setup floppy disk is optional depending on the districts. You can download the files from the website to make the setup disk.

Audio

• Chipset integrated by Realtek® ALC889
- Flexible 8-channel audio with jack sensing
- Compliant with Azalia 1.0 Spec
- Meet Microsoft Vista Premium spec

LAN

• Supports One LAN PCI-E Gb LAN controller by Realtek 8111DL.

IEEE1394 / FireWire

• VIA® VT6315N chipset
- Supports up to two 1394 ports. (Rear panel x1, pinheader x1)
- Transfer rate is up to 400Mbps.

Internal I/O Connectors

- ATX 24-Pin power connector
- 8-pin ATX 12V power connector
- CPU x1 / System x 3 FAN connectors
- CD-in connector
- Front panel audio connector
- Front panel connector
- 1 x chasis intrusion connector
- 2 x USB 2.0 connectors
- 6 x Serial ATAII connectors
- 2 x Serial ATAIII connectors
- 1 x ATA133 connector
- 1 x IEEE1394 connector support additional 1 port
- 1 x Serial port connector
- 1 x Parallel port connector
- 1 x Power Button
- 1 x Clear CMOS jumper
- 1 x SPDIF-out connector
- 1 x TPM module connector
- 1 x OC Genie Button
- 2 x Direct OC Buttons

MSI Reminds You...
• The floppy disk cable will be optional.

Back Panel I/O Ports

- 1 x Optical SPDIF-out
- 1 x PS/2 Keyboard / Mouse port
- 1 x IEEE1394 port
- 8 x USB 2.0 ports
- 2 x USB 3.0 ports
- 2 x eSATA ports
- 1 x RJ45 LAN Jack
- 1 x 6 in 1 audio jack

BIOS

• The mainboard BIOS provides "Plug & Play" BIOS which detects the peripheral devices and expansion cards of the board automatically.
• The mainboard provides a Desktop Management Interface(DMI) function which records your mainboard specifications.

Dimension

• 30.5cm(L) x 23.0cm(W) ATX Form Factor

Mounting

• 6 mounting holes.

Product Accessories

MSI Reminds You...
• The accessories will probably be different according to the different selling areas of product models. For details of accessories, please refer to the descriptions on the product package.