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P55A-G55

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. 

Intel® P55-based mainboard

• Support USB 3.0 & SATA 6Gb/s
• APS (Active Phase Switching) offers more than 93% power saving
• Winki 2.0 provides an easy-to-use internet environment

product comparison

Overview

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All Solid Capacitors

Capacitors are the most important component for electronic product's power supply. The quality of the capacitors can impact the stability of the entire system and risk of product failure. Currently there are two types of capacitors, electrolytic capacitors and solid capacitors. Compared to electrolytic capacitors, solid capacitors have a longer lifespan, and provide a more stable power under high temperatures. More importantly, solid capacitors do not have any liquid materials inside, and thus will not suffer a leak which would infringe upon the product’s stability. With such benefits is it no wonder that solid capacitors are very important for product quality's improvement.
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USB 3.0

Compared to the 480Mbps provided by traditional USB 2.0, the all-new USB 3.0's 5Gb/s offers 10 times the transfer bandwidth, so transferring a Blu-ray movie takes less than one minute.

Features
- 10X Faster Than USB 2.0
- Up to 5Gb/s Data Transfer Bandwidth
- World’s first to provide Front Panel USB 3.0 Port
- Boost Transfer Rate Between Your PC and External Storage Devices
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SATA 6Gb/s

SATA 6Gb/s provides double the bandwidth of traditional SATA 3Gb/s, and increases the data transfer rate between your mainboard and internal storage devices, such as 7200RPM HDDs, 10000RPM HDDs and SSDs. It’s also the current trend for upcoming high-speed internal storage devices to to break the existing bottleneck of a PC’s performance.

Features
- 2X Faster Than SATA 3Gb/s
- Up to 6Gb/s Data Transfer Bandwidth
- Unleash True Performance of New HDDs/SSDs
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Lossless 24-bit/192KHz HD Audio

Onboard PC audio gets better! MSI is the first to implement the most high-end HD Audio codecs available. Don’t be fooled by other inferior audio solutions onboard (sometimes you can’t even find the driver!) Only MSI offers the Loss-less 24-bit/192KHz HD Audio function with an incredible 109 SNR dB value to provide the most clear & vivid HD audio quality and support 7.1 channels surround sound playback with a 2-channel independent stereo output (multiple streaming) through the front panel 3.5 inch phone jack.
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APS (Active Phase Switching)

Active Phase Switching, APS, technology is an intelligent design that helps to save energy on MSI’s mainboards. The underlying idea is to switch off the power supply as soon as no electricity is needed, and when the system needs more resources again, APS will automatically adjust electricity supply accordingly. APS will automatically detect your processor’s loading at any given time and save energy accordingly. This is only possible by means of a very advanced power controlling technology. Other than software-based solutions, APS technology stands out from MSI's own research. The specially developed IC chip can operate automatically depending on the demands of the power supply, which is to reduce the total power usage. 
 
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M-Flash

Compared to common mainboard which need extra BIOS chips, MSI’s M-Flash has a double advantage which doesn’t need extra components and secondly, all your BIOS data will be saved in the USB drive. The stored data does not only have backup and upgrade function, moreover it can also be seen as a portable BIOS chip which is actually able to boot up your PC.

Features
- Backup/Restore Your BIOS to/from Any USB Flash Disk
- Avoid Unnecessary Repair Due to Accident Failures During The Upgrading Process
- Earn more BIOS Lifespan by Reducing Unnecessary Rewriting Process
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USB Safeguard

USB Safeguard can prevent mainboards and USB devices from being damaged by short-circuit and ESD (Electro-Static Discharge) with Anti-ESD chips built-into the mainboards. Additionally, the safeguard can protect against such dangers multiple times, and greatly improves product lifespan.

Features
- All MSI mainboards use USB Safeguard’s anti-ESD chip for thorough protection against ESD damage
- USB Safeguard is protected against a short circuit and/or ESD without the need for a fuse. It also supports stand-by power supply
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Live Update 5

MSI Live Update 5 is a powerful and useful application for updating the latest BIOS and Drivers, saving you time and lowers the risk of updating. End-users can install and run the Live Update 5 software on their computers with the companion CD or downloading the app from the MSI website.

Features
- Automatically Detect the BIOS/Driver/VGA/Utility Update
- Support Microsoft Windows 98SE/ME/2000/XP/Vista/7 32Bit
 
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Live Update Online

MSI Live Update Online is a powerful and useful application for updating latest BIOS and Drivers, which can save your time for searching and lower the risk while updating. Live Update Online is online services exclusively. End-users only have to connect to the download center and enable the Live Update Online function, and the updating will continue via the web pages completely. Live Update Online offers the latest BIOS, drivers and utilities from MSI for automatic updating. Through the user-friendly operation, end-users can update the system easily and increase performance immediately.
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ATI CrossFireX

ATI CrossFireX™ is the ultimate multi-GPU performance gaming platform. Enabling game-dominating power, ATI CrossFireX technology enables two or more discrete graphics processors to work together to improve graphics performance. ATI CrossFireX technology allows you to expand your system’s graphics capabilities. It allows you the ability to scale your system’s graphics horsepower as you need it, supporting up to four ATI Radeon™ HD graphics cards, making it the most scalable gaming platform ever. With an ATI CrossFireX gaming technology, the traditional graphics limitation exists no more, allowing you to enjoy higher performance as well as visual experience.
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Easy OC Switch

Every user desires more performance.  MSI has special Easy OC Switches to provide that accessibility to all users. This great technology makes it easier to tweak the core clock settings. There's no need to have a detailed understanding; with just a few simple steps, everyone is able to get the most out of their mainboards. With a single click, the whole system will increase by 5%-20% performance, making overclocking a very easy thing to do.
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3TB+ Infinity

3TB+ Infinity is not only breaking through the limit of traditional BIOS, but also enhancing the utilization of hard drives efficiently. In addition to supporting the latest 3TB hard drives, MSI 3TB+ Infinity technology can use the 3TB hard drive as boot disk when installing a 64-bit operating system. Compared to competitors, MSI 3TB+ Infinity is an industry-leading technology which substantially presents an advantage of development and application in the future.

Features
- All the latest 3TB hard drivers on the market can be supported
- Make the 3TB hard drive as boot disk when installing a 64-bit operating system

Basic Specification

The Specification may change without notice. The actual products sold are different from areas. Please check the detailed Specification with your local dealers.
CPU (Max Support) i3/i5/i7
AM3 CPU Ready N/A
FSB / Hyper Transport Bus 6.4GT/s
Chipset Intel® P55
DDR2 Memory N/A
DDR3 Memory DDR3 1066/1333/1600*/1800*/2000*/2133* (OC)
Memory Channel Dual
DIMM Slots 4
Max Memory (GB) 16
PCI-Ex16 2
PCI-E Gen Gen2 (1x16, 1x8)
PCI-Ex4 N/A
PCI-Ex1 2
PCI 3
IDE 1
SATAIII 2
SATAII 6
RAID 0/1/5/10
LAN 10/100/1000*1
TPM 1
USB 3.0 ports (Rear) 2
USB 2.0 ports (Rear) 8
Audio ports (Rear) 6+Optical SPDIF
Serial ports (Rear) N/A
Parallel ports (Rear) N/A
1394 ports (Rear) N/A
eSATA N/A
Display Port N/A
DrMOS II N/A
VGA N/A
HDMI N/A
DVI N/A
VGA Max Share Memory (MB) N/A
4-way SLI N/A
DirectX N/A
Form Factor ATX
DrMOS N/A
APS Y
Sideport Memory N/A
SLI N/A
3-way SLI N/A
Hybrid SLI N/A
CrossFire Y
Hybrid CrossFire N/A
D-LED2 N/A
Green Power Genie N/A

Detail Specification

The Specification may change without notice. The actual products sold are different from areas. Please check the detailed Specification with your local dealers.

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_E4 slots, these two PCIE x16 lanes will auto arrange from x16/ x0 to x8/ x8 
- supports ATI® Crossfire™
• 2 PCI Express gen2 x1 slots
• 3 PCI slots, support 3.3V/ 5V PCI bus Interface


On-Board IDE/SATA


• One Ultra DMA 66/100/133 IDE controller integrated in Marvell® 88SE9128B1.
- Supports PIO, Bus Master operation modes.
- Can connect up to two Ultra ATA drives.

• SATAII /SATAIII controller integrated in Intel P55/Marvell® 88SE9128B1 chipsets
- Supports six SATAII ports by P55
- Supports two SATAIII ports by Marvell 88SE9128B1, up to 6Gb/s, support SATA RAID 0/1.
- 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® ALC892
- 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.


Internal I/O Connectors

- ATX 24-Pin power connector
- 8-pin ATX 12V power connector 
- CPU x1 / System x2 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 Power Button
- 1 x Clear CMOS jumper
- 1 x SPDIF-out connector
- 1 x TPM module connector
- 1 x Serial port connector
- 1 x Parallel port connector
- 1 x Easy OC Switch

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
- 8 x USB 2.0 ports
- 2 x USB 3.0 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.

Awards

Silver Recommended Award - DOS/V Power Report
Date: 2011-01-15
Title: Silver Recommended Award
Comment: -
Media: DOS/V Power Report
Country: Jordan
Best Price/Performance Award - Techno-labs
Date: 2010-11-30
Title: Best Price/Performance Award
Comment: Open
Media: Techno-labs
Country: Turkmenistan
Price/ Quality Award - overclock.pl
Date: 2010-07-19
Title: Price/ Quality Award
Comment: Open
Media: overclock.pl
Country: Portugal

BIOS

!Attention:

Users who download BIOS from here (not using Live Update) should use the flash utility included in the downloaded compressed file when doing the BIOS update. To avoid BIOS update failure, please do not use older versions of the update utility or utilities not provided by MSI.

We suggest using Chrome, Firefox 3.0 or IE 8.0 above browsers to download BIOS, Drivers, etc.
Description - Update LAN option ROM.
- Add buzzer beep warning message with memory unplugged.
 Version 1.4
Type AMI BIOS Release Date 2011-04-22
Download 7668v14.zip File Size 1.28 MB
Note
Description - Update CPU module.
 Version 1.3
Type AMI BIOS Release Date 2010-09-15
Download 7668v13.zip File Size 0.93 MB
Note
Description - Improve memory compatibility
- Fixed I-Rocks PS/2 Keyboard cannot be detected during swap keyboard/mouse
- Fix CPU ratio would drop to 26~27 after S3 resume when using i7 875K and i5 655K CPU.
 Version 1.2
Type AMI BIOS Release Date 2010-08-03
Download 7668v12.zip File Size 0.89 MB
Note
Description - Update CPU Micro code.
- Support low voltage memory.
 Version 1.1
Type AMI BIOS Release Date 2010-07-01
Download 7668v11.zip File Size 0.85 MB
Note
Description New BIOS Release
 Version 1.0
Type AMI BIOS Release Date 2010-05-13
Download 7668v10.zip File Size 0.85 MB
Note
click here

Live Update 5

Live Update 5 is a powerful update tool with user-friendly interface, provides an automatic scan and download for your MSI products. Using this service to keep your system in the most updated environment.

Live Update 5 supports the following MSI product lines and items:
Mainboards: Drivers/BIOS/Utilities;
Graphics Cards: Drivers/BIOS

Click here to read the instruction

Driver

Win7 32,Win7 64,Vista 32,Vista 64,XP 32,XP 64

!Special Note:

The Drivers provided here are exclusively for MSI products only. MSI takes no responsibility for any damage resulted from improper usage or lack of technical expertise.

We suggest using Chrome, Firefox 3.0 or IE 8.0 above browsers to download BIOS, Drivers, etc.
Renesas USB3.0 Drivers
Description
Version 2.0.34.0
Type System & Chipset Drivers Release Date 2011-03-03
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download renesas_usb3_mb.zip File Size 16.04 MB
Note
Intel 3/4/5 Chipset Drivers
Description Ver: 9.1.2.1008
 Version
Type System & Chipset Drivers Release Date 2010-07-30
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download intel_345_inf_mb.zip File Size 2.39 MB
Note
TPM Device Driver
Description Intel Trusted Platform chipset driver
XP: 2.00.0000.00
 Version 2.00.0000.00
Type System & Chipset Drivers Release Date 2012-03-13
OS XP 64, XP 32
Download TPMDriver_XP_MB.zip File Size 0.03 MB
Note
Realtek PCI-E Ethernet Drivers
Description
Version 5.794.0222.2012
Type On-Board LAN Drivers Release Date 2012-05-03
OS XP 64, XP 32
Download Realtek_LAN_PCIE_MB.zip File Size 5.51 MB
Note
Realtek PCI-E Ethernet Drivers
Description
Version 6.250.0908.2011
Type On-Board LAN Drivers Release Date 2012-03-12
OS Vista 64, Vista 32
Download Realtek_LAN_PCIE_Vista_MB.zip File Size 5.55 MB
Note
Realtek PCI-E Ethernet Drivers
Description Network Driver
 Version 7.53.0216.2012
Type On-Board LAN Drivers Release Date 2012-05-03
OS Win7 64, Win7 32
Download realtek_pcielan_7_mb.zip File Size 5.63 MB
Note
Realtek High Definition Audio Driver
Description • Realtek High Definition Audio System Software
• WinXP Driver Version: 5.10.0.6586
• Windows 7/Vista Version: 6.0.1.6586
 Version 6.0.1.6586
Type On-Board Audio Drivers Release Date 2012-03-21
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download realtek_hd_all_mb.zip File Size 148.85 MB
Note
Intel Rapid Storage Technology Floppy Driver (F6)
Description Intel Rapid Storage Technology for SATA RAID and AHCI mode.
 Version 10.5.0.1007
Type On-Board PIDE/SATA Drivers Release Date 2011-08-22
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download Intel_RST_floppy_MB.zip File Size 0.58 MB
Note
Marvell SATAIII Drivers
Description Ver: 1.0.0.1047-WHQL
 Version
Type On-Board PIDE/SATA Drivers Release Date 2010-11-24
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download marvell_sata3_vx7_mb.zip File Size 1.32 MB
Note
Intel P55 SATA RAID Driver (For floppy driver)
Description Intel P55 SATA RAID driver
1. Extract the file and Copy all files to the floppy.
2. Press F6 to install driver through the floppy when booting and loading RAID function.
 Version
Type On-Board PIDE/SATA Drivers Release Date 2009-07-24
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download intel_p55_floppy_raid_mb.zip File Size 0.42 MB
Note
Intel P55 AHCI / RAID Drivers
Description Ver: 8.9.0.1023
 Version
Type On-Board PIDE/SATA Drivers Release Date 2009-07-24
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download intel_p55_raid_all_mb.zip File Size 21.98 MB
Note
JMicron JMB36x IDE Drivers
Description XP/Vista/Win7 Ver: 17.55.00.WHQL
 Version
Type On-Board PIDE/SATA Drivers Release Date 2010-02-26
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download jmicron_jmb363_ide_all_mb.zip File Size 3.87 MB
Note
Intel Rapid Storage Technology Driver
Description Intel Rapid Storage Technology for SATA RAID and AHCI mode.
 Version 10.5.0.1027
Type On-Board PIDE/SATA Drivers Release Date 2011-11-21
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download Intel_RST_MB.zip File Size 36.83 MB
Note

Utility

Win7 32,Win7 64,Vista 32,Vista 64,XP 32,XP 64,DOS

!Special Note:

The Utilities provided here are exclusively for MSI products only. MSI takes no responsibility for any damage resulted from improper usage or lack of technical expertise.

We suggest using Chrome, Firefox 3.0 or IE 8.0 above browsers to download BIOS, Drivers, etc.
i-Charger
Description Provide charging function for iPad
 Version 1.0.104
Type Utility Release Date 2010-07-13
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download icharger_vx7_mb.zip File Size 0.52 MB
Note When connect iPad to USB port for charging, please remove other USB devices for stability.
Marvell RAID Tool for SATAIII
Description Marvell RAID Tool for SATAIII
 Version 4.1.0.1610
Type Utility Release Date 2010-02-26
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download marvell_raid_tool_s3_mb.zip File Size 36.43 MB
Note
Marvell SATAIII Management Utility
Description Marvell SATAIII Management Utility
 Version 4.1.0.1601
Type Utility Release Date 2010-01-15
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download marvell_sata3utl_vx7_mb.zip File Size 12.73 MB
Note
Intel Turbo Boost Monitor
Description Intel Turbo Boost Monitor Utility
 Version 2.1.23.0
Type Utility Release Date 2012-03-21
OS Win7 64, Win7 32, Vista 64, Vista 32
Download itbm_v7_mb.zip File Size 22 MB
Note
DirectOC
Description Utility for CPU clock OSD display and over clocking.
 Version 1.0.018
Type Utility Release Date 2010-06-09
OS XP 32
Download File Size 0 MB
Note
DirectOC
Description Utility for CPU clock OSD display and over clocking.
 Version 1.0.018
Type Utility Release Date 2010-06-09
OS Win7 64, Win7 32, Vista 64, Vista 32
Download DirectOC_mb.zip File Size 2.25 MB
Note
MSI Control Center
Description Utility for PC overclocking, overvotage and power saving.
Version 1.0.223
Type Utility Release Date 2011-12-14
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download ControlCenter_mb.zip File Size 4.54 MB
Note
Drive Booster Manager
Description eSATA Manager Interface
 Version 0.09.44
Type Utility Release Date 2009-07-24
OS Vista 64, Vista 32, XP 32
Download DriverBoosterManager_mb.zip File Size 5.92 MB
Note
HDDBackup
Description 1. For System Backup
2. Please use Nero to burn the Image to boot up the system for backup.
 Version 1.25
Type Utility Release Date 2008-07-30
OS DOS
Download hddbackup_mb.zip File Size 43.56 MB
Note
MSI Live Update 5
Description • Online update BIOS/Driver/Firmware/Utility.
• Live Monitor auto-detects and suggests the latest BIOS/Driver/Utilities information.
Version 5.0.081
Type Utility Release Date 2012-05-03
OS Win7 64, Win7 32, Vista 64, Vista 32, XP 64, XP 32
Download LiveUpdate.zip File Size 8.76 MB
Note For K9VGM-V (MS-7253) mainboard, please do not select the DMI option.

Manual

!Special Note:

MSI™ provides user manuals (in PDF format) here for download. You can use Adobe Acrobat Reader (Adobe's WEB Site) to open them.

An easy guide for you to assemble your PC step by step, please refer to "Quick Installation Guide".

We suggest using Chrome, Firefox 3.0 or IE 8.0 above browsers to download BIOS, Drivers, etc.
Version Language File Size Download Release Date
1.0 Multi-Language 11.85 MB M7668v1.0_ASIA.zip 2010-09-17
1.0 Multi-Language 9.2 MB M7668v1.0_Euro.zip 2010-04-29
1.1 English 5.85 MB E7668v1.1.zip 2010-09-17

Quick Guide

!Special Note:

MSI™ provides user manuals (in PDF format) here for download. You can use Adobe Acrobat Reader (Adobe's WEB Site) to open them.

We suggest using Chrome, Firefox 3.0 or IE 8.0 above browsers to download BIOS, Drivers, etc.
Version Language File Size Download Release Date
1.5 English 5.85 MB MSI_Software_Guide.zip 2012-03-09

Test Report

CPU Support

FAQ

Release Date Title