Asus MAXIMUS III Extreme 16GB DDR3 INTEL Motherboard

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Supports Intel Processors in the LGA1156 Package
This motherboard supports the latest Intel Lynnfield processors in LGA1156 package, which as memory and PCI Express controller integrated to support 2-channel (4 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes, providing great graphics performance. Intel Lynnfield processor is one of the most powerful and energy efficient CPU in the world

Intel P55 Chipset
The Intel P55 Express Chipset is the latest one-chipset design to support the latest 1156 socket Intel Lynnfield processors. Intel P55 provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability

Double Speed; Double Bandwidth
This motherboard supports the latest PCIe 2.0 devices for double speed and bandwidth which enhances system performance.

Dual-Channel, DDR3 2200(O.C.) MHz
The motherboard supports DDR3 memory that features data transfer rates of 2200(O.C.) / 2133(O.C.) / 2000(O.C.) / 1800(O.C.) / 1600(O.C.) / 1333 / 1066 MHz to meet the higher bandwidth requirements of the latest operation system, 3D graphics, multimedia, and Internet applications. The dual-channel DDR3 architecture double the bandwidth of your system memory to boost system performance.

Overwhelm your acknowledgement with wireless overclocking experience
Still overclocking in old-fashioned way? Let RC Bluetooth bring you the whole new idea of how to do! Just simply push the button from the Back I/O on the RC Bluetooth card, overclockers can real-time monitor the desktop PC system status & tweak its parameters - such as voltages and frequency on the fly. When users want to use ordinary bluetooth functions, just simply push the button once again & enjoy all the wireless convenience brought from RC Bluetooth.

Plug and Overclock - Tweak it the hardcore way
Monitor the status of your desktop PC and tweak its parameters in real-time via a notebookjust like a race car engineerwith ROG Connect. ROG Connect links your main system to a notebook through a USB cable, allowing you to view real-time POST code and hardware status readouts on your notebook, as well as make on-the-fly parameter adjustments at a purely hardware level.

Memory is A-OK
Memory compatibility is among the top concerns when it comes to computer upgrades. Worry no more, MemOK! is the fastest memory booting solution today. This remarkable memory rescue tool requires nothing but a push of a button to patch memory issues and get your system up and running in no time. The technology is able to determine failsafe settings that can dramatically improve system booting success.

Intelligent multiple control at hand
The iROG is a special IC which enables several ROG highlitghted functions that gives users full disposal of the motherboard at any stage! This design allows advanced user control and management to be processed purely at a hardware level. iROG greatly increases fun during overclocking for PC enthusiasts and it offers system maintainence and management with more control and efficiency.

Two BIOS ROM. Two BIOS settings. Twice the overclocking flexibility.
Overclockers prayer to have BIOS flexibility is answered! With the new BIOS Flashback, PC enthusiasts can overclock with even more confidence. BIOS Flashback gives overclockers the ability to save two versions of the BIOS simultaneously. Very much like the "SaveGame" function, one BIOS can be used for the overclocking adventure, while the other BIOS is to be stored with any previous version. BIOS Flashback brings the ultimate convenience to overclockers! By pushing BIOS button, overclockers can easily choose which BIOS ROM they want to save & boot from.

Get all hands-on with hardware-based overclocking
ProbeIt takes the guesswork out of locating the motherboards measurement points, identifying them clearly in the form of 5 sets of detection points so youll know exactly where to get quick yet accurate readings using a multitester.

A Simple click for instant upgrade
Ever wish that you could have a more expansive CPU? Upgrade your CPU at no additional cost with ROGs CPU Level Up! Simply pick the processor you wanted to OC to, and the motherboard will do the rest! See the new CPU speed and enjoy that performance instantly. Overclocking is never as easy as this.

Friendly reminder on Voltage Settings
In the pursuit of extreme performance, overvoltage adjustment is critical but risky. Acting as the "red zone" of a tachometer, the Voltiminder LED displays the voltage status for CPU, PCH, and Memory in a intuitive color-coded fashion. The voltiminder LED allows quick voltage monitoring for overclockers.

Optimal power boost for extreme CPU overclocking
Maintaining ample voltage support for the CPU is critical during overclocking. The Loadline Calibration ensures stable and optimal CPU voltage under heavy loading. It helps overclockers enjoy the motherboards ultimate OC capabilities and benchmark scores.

Make connections quick and accurate
The Q-Connector allows you to connect or disconnect chassis front panel cables in one easy step with one complete module. This unique adapter eliminates the trouble of plugging in one cable at a time, making connection quick and accurate.

10X Faster Date Rates
Experience ultra-fast data transfers at 4.8Gbps with USB 3.0the latest connectivity standard. Built to connect easily with next generation components and peripherals, USB 3.0 transfers data 10X faster and is also backward compatible with USB 2.0 components.

Conveniently store or load multiple BIOS settings
share and distribute favorite overclocking settings The motherboard features the ASUS O.C. Profile that allows users to conveniently store or load multiple BIOS settings. The BIOS settings can be stored in the CMOS or a separate file, giving users freedom to share and distribute their favorite overclocking settings.

Technical Details



  • Brand : ASUS
  • Model : MAXIMUS III Extreme



  • Intel Socket 1156 Core i7 Processor/Core i5 Processor/Core i3 Processor
  • Supports Intel Turbo Boost Technology
  • Refer to  for Intel CPU support list



  • Intel P55 Express Chipset 



  • 4 x DIMM, Max. 16 GB, DDR3 2200(O.C.)/2133(O.C.)/2000(O.C.)/1800(O.C.)/1600/1333/1066 Non-ECC,Un-buffered Memory
  • Dual Channel memory architecture
  • Hyper DIMM support is subject to the physical characteristics of individual CPUs.
  • Supports Intel Extreme Memory Profile (XMP)
  • Please refer to or user manual for the Memory QVL(Qualified Vendors List). 

Expansion Slots 


  • 5 x PCIe 2.0 x16 Supports single at x16, dual at x16, triple at x 16 x16 x8, quad x8, or 5 x8
    1 x PCI 2.2

Multi-GPU Support


  • Supports NVIDIA SLI Technology / ATI CrossFireX Technology



  • Intel P55 Express Chipset built-in : 6 xSATA 3.0 Gb/s ports (Gray), Intel Matrix Storage Technology Support RAID 0,1,5,10
  • JMicron 363 controllers :1 x SATA 3.0 Gb/s port (Black), 1 x External SATA 3.0 Gb/s port (SATA On-the-Go)
  • Marvell PCIe SATA 6Gb/s controller : 2 x SATA 6.0 Gb/s ports (Red) 



  • Realtek RTL8112L Gigabit LAN controller       



  • VIA VT2020 10-Channel High Definition Audio CODEC
  • Supports Blu-ray audio layer content protection
  • Supports 1 Optical S/PDIF out port at back I/O
  • Supports 1 S/PDIF out header
  • Supports Jack-detection, Multi-streaming, Front Panel Jack-retasking 

IEEE 1394  


  • 2  x 1394a port(s)  (1 port onboard, 1 port at back I/O)   



  • NEC USB 3.0 controller
  • 2 x USB 3.0/2.0 ports (at back I/O)
  • Intel P55 Express Chipset
  • 11 USB 2.0 ports (4 ports at mid-board, 7 ports at back I/O, 1 port at back I/O is also for ROG connect) 

Peripheral Support


  • ROG OC Station 

Overclocking Features 


  • ROG Connect
  • RC Bluetooth
  • Extreme Engine Digi : 8-phase CPU digital VRM power, 3-phase VTT digital VRM power, 3-phase Memory power ,ML
  • Cap for CPU
  • ProbeIt
  • iROG
  • Extreme Tweaker
  • BIOS Flashback
  • Loadline Calibration
  • Intelligent overclocking tools : 8 O.C. Profile
  • Overclocking Protection : COP EX (Component Overheat Protection - EX), Voltiminder LED, ASUS C.P.R.(CPU Parameter Recall) 

Special Features 


  • CPU Level Up
  • MemOK
  • Onboard Button : Power / Reset / Clr CMOS (at back IO)
  • ASUS MyLogo3
  • ASUS Fan Xpert
  • ASUS EZ Flash 2
  • ASUS CrashFree BIOS 3
  • ASUS Q-Connector
  • ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
  • ASUS Q-Slot

Back Panel I/O Ports 


  • 1 x External SATA
  • 1 x IEEE 1394a
  • 1 x LAN(RJ45) port
  • 10 -Channel Audio I/O
  • 1 x Clr CMOS switch
  • 1 x PS/2 Keyboard port (purple)
  • 2 x USB 3.0/2.0 ports
  • 7 x USB 2.0 ports (1 port also for ROG Connect)
  • 1 x ROG Connect On/Off switch
  • S/PDIF Out (Optical) 

Internal I/O Connectors 


  • 2 x USB connectors support additional 4 USB 2.0 ports
  • 9 x SATA connectors: 2 x SATA 6.0Gb/s connectors (Red) / 6 x standard SATA connectors (Black) / 1 x SATA_E(Gray)
  • 8 x Fan connectors: 1 x CPU / 1 x PWR / 3 x Chassis / 3 x Optional
  • 5 x ProbeIt Measurement Points
  • 3 x Thermal Sensor Connectors
  • 1 x IEEE1394a Connector
  • 1 x SPDIF_Out Connector
  • 1 x 24-pin ATX Power Connector
  • 1 x 8-pin ATX 12V Power Connector
  • 1 x En/Dis-able Clr CMOS Switch
  • 1 x LN2 Mode Header
  • 1 x Power on Switch
  • 1 x Reset Switch
  • 2 x EZ Plug Connectors
  • 1 x OC Station Header
  • 1 x RC Bluetooth Header
  • 1 x Go Button
  • 1 x BIOS Button
  • System Panel Connector



  • 16 Mb Flash ROM AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI2.0a Multi-Language BIOS



  • WOL by PME,WOR by PME,PXE 



  • 1 x RC Bluetooth Card
  • 1 x I/O Shield
  • 1 x Optional Fan
  • 1 x ROG Connect Cable
  • 1 x SLI Cable
  • 1 x 3-way SLI Cable
  • 1 x 2-in-1 ASUS Q-Connector Kit
  • 1 x 2-in-1 SATA 6.0Gb/s Cables
  • 3 x 2-in-1 SATA 3.0Gb/s Signal Cables
  • 1 x 2-port USB2.0 + ESATA Module
  • 1 x Thermal Sensor Cables Pack
  • 1 x Cable Ties Pack
  • 1 x ROG Theme Label
  • 1 x 12-in-1 ROG Cable Label
  • 1 x User's Manual
  • Bluetooth Module Accessory Card : Bluetooth V2.0/V2.1+EDR, RC Bluetooth On/Off Switch 

Support Disc


  • ASUS PC Probe II
  • ASUS AI Suite
  • ASUS Update
  • Kaspersky Anti-Virus
  • Support DVD : Drivers and Applications
  • Futuremark 3DMark Vantage Advanced Edition
  • ASUS TurboV EVO Utility

Form Factor 


  • ATX Form Factor
  • 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )


Brand  ASUS
Model  Maximus III Extreme
Supported CPU
CPU Socket Type  LGA 1156
CPU Type  Core i7 / i5 / i3 / Pentium (LGA1156)
Supported CPU Technologies  Supports Intel Turbo Boost Technology
North Bridge  Intel P55
Number of Memory Slots  4240pin
Memory Standard  DDR3 2200(O.C.)/2133(O.C.)/2000(O.C.)/1800(O.C.)/1600 /1333/1066
Maximum Memory Supported  16 GB
Channel Supported  Dual Channel
Expansion Slots
PCI Express 2.0 x16  5 x PCIe 2.0 x16 Supports single at x16, dual at x16, triple at x 16 x16 x8, quad x8, or 5 x8
PCI Slots  1
Storage Devices
SATA 3Gb/s  7
SATA RAID  SATA 3.0Gb/s: Intel Matrix Storage Technology Support RAID 0,1,5,10
Onboard Video
Onboard Video Chipset  None
Onboard Audio
Audio Channels  10-Channel
Audio Chipset  VIA VT2020
Onboard LAN
LAN Chipset  Realtek 8112L
Max LAN Speed  10/100/1000 Mbps
Rear Panel Ports
USB  2 x USB 3.0
IEEE 1394  1 x IEEE 1394a
eSATA  1 x eSATA 3Gb/s
S/PDIF Out  1 x Optical
Audio Ports  6 Ports
PS/2  1
Onboard USB
Onboard USB  2 x USB connectors support additional 4 USB 2.0 ports
Onboard 1394
Onboard 1394  1x 1394a
Physical Spec
Form Factor  ATX Form Factor
Power Pin  24 Pin
Dimensions  12.0" x 9.6"


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