P55H-AK (V1.0)

ECS Ultimate Gaming motherboard
ECS P55H-AK is ECS most high-end motherboard designed for Intel LGA1156 K series unlock CPU to reach the optimum system performance. It has NVIDIA NF200 with 32 PCIe lanes for 3 x PCIe16X GEN 2.0 graphic interface to support 3-Way NVIDIA SLI / ATi CrossfireX technology. Also, ECS unique M.I.B X interface makes a simple, fast and safe O.C operation in BIOS. With its exclusive Rapid 333 feature, P55H-AK provides USB 3.0, SATA 6Gb/s and eSATA 6Gb/s high data transfer rate to fulfill the most speed-demanding gamers.

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 Durathon2 Technology - Motherboard quality you can trust.

When it comes to the quality and durability of your motherboard, ECS goes above and beyond industry standards to ensure that you have a motherboard that will last long and always continue to out perform the competition. Trust only motherboards built with Durathon Technology. Click " Durathon microsite" for more details.

 AMD CrossFire X

The technology not only combines multi-cards and motherboard power that soars into a new dimension of graphics capability, but delivers the highest image quality and screen resolutions, even with the most demanding 3D titles.
 Qooltech III Silent Colling Solution

ECS Qooltech III comes with dual heat pipe design to enhance cooling efficiency for PWM (reduce 15~20 degrees C in temperature).
 15u Gold Contact - 3 Times Extra Protection

It offers 3 times extra anti-oxidation, temperature resistant and scrape protection to ensure motherboards longest lifespan, better reliability and excellent contact.

 Speedy Storage Interface - SATA 6G

SATA 6Gb is the latest SATA connection standard, features with 6Gb/s large bandwidth, it’s 2x faster than previous generation. Unleash your HDD/SSD performance.
 Full Duplex Operation Support - USB 3.0

Super Speed USB 3.0 is able to transfer data 10 times faster than USB 2.0. An innovative power management system provides better energy saving and carries more power to recharge more devices.
  3X Gaming Power (3 Way SLI + Crossfire X)
The most advance technologies of multi-graphics processing, supporting both ATI CrossFireX and NVIDIA 3-way SLI to deliver up to a 2.8x performance over a single GPU system.
  ECS M.I.B X (Ultimate BIOS O.C interface)
ECS O.C profile offers 3 sets of O.C values for CPU and DRAM to reach higher performances in a quick, simple and safe way. It keeps users’ preferable BIOS settings to regain your last successful O.C configuration to create the most convenient O.C experience.
  15μ Gold Contact
ECS 15μ gold technique contains 15μ gold contact on CPU socket and Memory slot pins. It offers 3 times extra anti-oxidation, temperature resistant and scrape protection to ensure motherboards longest lifespan, better reliability and excellent contact.
  10X Transfer Speed (Rapid 333)
Support latest generation USB 3.0, SATA 3.0(6Gbps)and eSATA 3.0(6Gbps)high-speed interface technologies that meet the high-capacity and high-speed needs of multi-media publishing and PC gaming.
  LGA 1156 Core i7
Supports the Intel® Core i7 Processors in the LGA1156 package. Applying processing power where it's needed most with faster, intelligent, multi-core technology, and delivering an incredible breakthrough in PC performance.
  LGA 1156 Core i5
Supports the Intel Core i5 Processors in the LGA1156 package. Accelerating in response to demanding tasks, such as playing games and editing photos with intelligent performance, and moving faster when you do.
  LGA 1156 Core i3
Supports the Intel Core i3 Processors in the LGA1156 package. This family equipped with Intel® HD Graphics is the perfect entry point for a fast, responsive PC experience.
  LGA 1156
Supports LGA 1156 CPU-socket interface in the single chipset structure and will supersede LGA775 in the high-end and performance desktop segments. It can tune your system for extra performance and feed your need for speed.
  ATI CrossFire X
The technology not only combines multi-GPU and motherboard power that soars into a new dimension of graphics capability, but also delivers the highest image quality and screen resolutions, even with the most demanding 3D titles.
Revolutionary platform innovation intelligently scales graphics performance up to 2x. Combine multiple NVIDIA GeForce-base graphics cards with an NVIDIA nForce SLI-based motherboard. Rigorous testing and certification process for unmatched stability and compatibility.
The exceptionally increased interconnect bit rate from 2.5GT/s up to 5.0GT/s would effectively eliminates the bottle neck of the system performance and brings the most terrific computing experience from the present to the future.
  SATA 6Gb/s
Doubles the transfer speed of SATA 3G, running at speed up to 6.0Gb/s, and can connect with any other SATA 3.0Gb/s and 1.5Gb/s devices for backward compatibility.
  SATA 3.0Gb/s
Doubles the transfer speed of SATA, running at speed up to 3.0Gb/s, and fully compatible with the soon-to-be-released SATA HDD, CD-ROM and other cutting-edge devices with NCQ function support.
  RAID 0, 1, 5, 10
Supports RAID 0(Striped disk array), RAID 1(Mirroring disk array), RAID 5(Block Interleaved Distributed Parity), RAID 10 (A Stripe of Mirrors). Provides users the performance and protection.
  8 Channel High Definition Audio
Integrated 8-channel HD Audio CODEC delivering advanced multi-channel audio and bringing you the experience of home theater-quality sound.
  Dual Gigabit LAN
The dual Gigabit LAN design allows a computer managing network traffic between two separate networks and ensures rapid data transfer from WAN to LAN without any latency.
  USB 3.0
The latest generation Super Speed USB 3.0 Card is able to transfer data 10 times faster than USB 2.0. An innovative power management system provide better energy saving and carry more power to recharge more USB rechargeable devices. USB 3.0 Card is compatible with USB 2.0 to add more convenience and excellent performance.
  USB 2.0
USB2.0 is the latest connectivity standard which delivers transfer speeds up to 480Mb/s for easy connectivity and ultra-fast data transfers.
ECS eJIFFY is a Linux based interface for a fast boot application which is compressed in a CD to install on the hard drive.Within 8 seconds after the computer boots up, eJIFFY is ready to provide users the total enjoyment for web browsing, photo reviewing and on-line chat. Instead of waiting for the regular OS to start up, eJIFFY serves a convenient center to have quick fun or a glance at the hot news in today’s fast pace world where nothing can be too quick.
  eBLU - BIOS Live Update Utility
ECS eBLU utility makes updating BIOS fast and easy. eBLU saves time and hassle of searching for BIOS online and avoid complicated flashing steps. With simple and easy steps it checks for new BIOS version on-line and safely guides the user to flash the system BIOS.
  eOC - Easy Over Clock Utility
Easy Over Clock Utility is a easy and simply overclocking tools that provides user-friendly windows operation interface for novices and overclockers, with clicking on your mouse only you can get much higher performance of CPU quickly. It is available for download and updated online to get the latest version. Combine with ECS MIB technology to challenge undiscovered extreme overclocking than ever before.
  eDLU - Drivers Live Update Utility
ECS eDLU utility makes updating Drivers fast and easy. eDLU Saves time and hassle of searching for Drivers online and avoid complicated steps. With simple and easy steps it checks for new Drivers version on-line and let the user to update the Drivers.
  Norton™ Internet Security
Simple, Easy-to-Use Interface, delivers fast and comprehensive online threat protection, guarding your PC, network, without slowing you down. Giving you greater insight into downloaded applications, whether they can be trusted, and how they may impact your PC’s resources and performance Offering users a safer and more convenient environment than ever.ECS recommends the immediate installation of Norton Internet Security of your computer.
  Certified For Windows® 7
Windows® 7 platform introduces a number of manageability improvements that can reduce total cost of ownership by helping to increase automation, improve user productivity, and provide flexible administrative control to meet compliance requirements. It is more user-friendly and has been optimized to consume less system resources with Windows® 7 as well. Furthermore, the VT technology is enhanced to support real-time multimedia application including video playback and 3D games.
  EuP Certified
ECS Motherboards have been certified by EuP. EuP certification verifies that ECS motherboards comply with European Union stander to decrease the environmental effects and promote sustainable environment. Save energy and keep healthy environment by choosing ECS motherboards.
Choose an environment-friendly, fully RoHS-compliant ECS product as the foundation for keeping harmful substances out of our ecosystem.
  ECS Deep Green
An industry-leading energy saving technology under 0.001 watt power consumption standard at soft off mode. Reduces energy consumption and CO2 production much better than EuP 2013 standard. It means the technology planted 96,500 trees per year.
CPUº LGA1156 socket for latest Intel Core i7 / Core i5 / Core i3 high-end desktop processors
º Supports Unlocked Intel® Core™ i7 / Core™ i5 Processors
º Supports Hyper-Threading Technology CPU
º Supports Intel® Turbo Boost Technology
º Supports Intel® Smart Cache
Extra Chipsº NVIDIA nForce® 200 PCI Express switch chip with extra 32 PCIe lanes
    • Programming support for NVIDIA® SLI™ technology
    • Full 64-bit addressing
    • Supports the PCI Express power management capability
º PLX PEX 8608 PCIe Gen 2 switch
    • Offers 8 PCI Express Gen2 (5.0GT/s) lanes
    • Supports Read Pacing™ Technology
    • Supports packet cut-thru with the industry’s lowest latency of 140ns (x4 to x1)
MEMORYº Dual-channel DDR3 memory architecture
º 4 x 240-pin DDR3 DIMM socket support up to 16GB
º Supports DDR3 2400 (OC) / 2200 (OC) / 2000 (OC) /1800 (OC) /1600 (OC) / 1333 /1066 DDR3 SDRAM
º Supports Intel® Extreme Memory Profile (XMP)
Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows® 32-bit OS.
For Windows® 64-bit OS with 64-bit CPU, there is no such limitation

EXPANSION SLOTº 3 x PCI Express Gen 2.0 x16 slots
º 2 x PCI Express x1 slots
º 1 x PCI slot
º PCIE16X_1/PCIE16X_2 /PCIE16X_3 runs at x16/x8/x8 speed.
STORAGEº Support by Intel® P55
    • 6 x Serial ATA 3.0Gb/s devices
    • RAID0, RAID1, RAID5, RAID 10 configuration
º Support by Marvell 9128
    • 2 x eSATA 6.0Gb/s ports supporting external SATA 6.0Gb/s devices
    • 2 x Serial ATA 6.0Gb/s ports supporting 2 x SATA 6.0Gb/s device
    • Supports SATA RAID 0 and 1
AUDIOº Realtek RTL889 8-Ch High Definition audio CODEC
º Capability for “full rate” BluRay / DVD / HD DVD support.
LANº Dual RealTek RTL8111E Gigabit Fast Ethernet Controllers with Teaming
REAR PANEL I/Oº 1 x PS/2 keyboard/mouse combo port
º 2 x RJ45 LAN connectors
º 1 x Audio port (Line-in, Line-out, Mic-in)
º 1 x SPDIF port
º 1 x Clear_CMOS button
º 2 x eSATA 6.0Gb/s ports
º 2 x USB 3.0 ports compatible to both USB 3.0/2.0 devices (blue)
º 8 x USB 2.0 ports
INTERNAL I/O CONNECTORS & HEADERSº 1 x 24-pin ATX Power Supply connector
º 1 x 8-pin ATX 12V Power Connector
º 1 x 4-pin power connector for VGA card
º 1 x 4pin CPU_FAN connectors
º 1 x 3-pin PWR_FAN connector
º 1 x 3-pin SYS_FAN connector
º 1 x Power on button
º 1 x Reset button
º 1 x Speaker header
º 1 x Front panel switch/LED header
º 1 x Front panel audio header
º 1 x SPDIF out header
º 1 x Clear CMOS header
º 1 x Serial Header(COM)
º 6 x Serial ATA 3Gb/s connectors
º 2 x SATA 6Gb/s connectors
º 1 x USB 3.0 header supports additional 2 USB 3.0 Ports
º 2 x USB 2.0 headers support additional 4 USB 2.0 Ports
º Supports Plug and Play, STR (S3) / STD (S4) , Hardware monitor, Multi Boot
º Supports ACPI & DMI
º Support over-clocking
º Audio, LAN, can be disabled in BIOS
º F11 hot key for boot up devices option
º Support ECS M.I.B X Utility
º CPU voltage adjustable
º Memory voltage adjustable
    • NB Chipset Voltage Adjustable
    • SB Chipset Voltage Adjustable
    • HT Voltage Adjustable
    • External Clock Adjustable
FORM FACTORº ATX Size 305mm*244mm

 Driver Download

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Please read the notes carefully before updating BIOS.
1.Do not update the BIOS if the system is running fine. Unsuccessful BIOS flash may cause the system fails to boot up. The manufacturer is not responsible for any BIOS flash failure.
2.Make sure your M/B PCB version number first, and then read the updated description & special note carefully to check if the new BIOS version patch pertain to your current problem.
(How to recognize the M/B PCB version)
3.Please DO NOT reboot system,unplug power supply and remove battery during BIOS update process.
4.It is recommended to use the updated flash utility included in each BIOS download package.
(How to use flash utility).
OS ID NOProduct Line
Windows 7 32 bit1414646Motherboard

System reports 8GB(3.99GB usable) at 64bit OS with 8GB(2GB*4pcs)memory installed. And "Memory Remap Feature" is "enabled" under Advance Chipset of BIOS. 

Please make sure that you exact follow the instruction of the manual for plugging the memory modules in order first as defined by Intel.

The possible reasons may cause the memory size half reduction are, 
Memory Remap Feature need to be enabled for 64bit OS.
2.  Memory module not well installed on DIMM slot. 

* means validated by ECS at time of writing. Changes to component or CPU may produce a different outcome. The result shown is for reference only and is subject to change w/o notification.

SocketFamilyProcessorWattageFrequencyCacheSteppingSince BIOS
LGA1156Intel Core™ i7860 (B1) (95W)N/A2.80 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i7860s (B1) (82W)N/A2.53 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i7870 (B1) (95W)N/A2.93 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i7870s (B1) (82W)N/A2.66 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i7875K(B1)(95W)N/A2.93GHz8MBN/A09/30/2010
LGA1156Intel Core™ i7880(B1)(95W)N/A3.06GHz8MBN/A09/30/2010
LGA1156Intel Core™ i5650 (C2) (73W)N/A3.20 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5650 (K0) (73W)N/A3.20GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5655K(K0)(73W)N/A3.20GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5660 (C2) (73W)N/A3.33 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5660 (K0) (73W)N/A3.33GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5661 (C2) (87W)N/A3.33 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5661 (K0) (87W)N/A3.33GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5670 (C2) (73W)N/A3.46 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5670 (K0) (73W)N/A3.46GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5680(K0)(73W)N/A3.60GHz4MBN/A09/30/2010
LGA1156Intel Core™ i5750 (B1) (95W)N/A2.66 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i5750s (B1) (82W)N/A2.40 GHz8MBN/A09/30/2010
LGA1156Intel Core™ i5760 (B1) (95W)N/A2.80GHz8MBN/A09/30/2010
LGA1156Intel Core™ i3530 (C2) (73W)N/A2.93 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i3530 (K0) (73W)N/A2.93GHz4MBN/A09/30/2010
LGA1156Intel Core™ i3540 (C2) (73W)N/A3.06 GHz4MBN/A09/30/2010
LGA1156Intel Core™ i3540 (K0) (73W)N/A3.06GHz4MBN/A09/30/2010
LGA1156Intel Core™ i3550(K0)(73W)N/A3.20GHz4MBN/A09/30/2010
LGA1156Intel Core™ i3560(K0)(73W)N/A3.33 GHz4MBN/A09/30/2010
LGA1156Intel PentiumG6950 (C2) (73W)N/A2.80 GHz3MBN/A09/30/2010

All memory modules on Qualified Vendors List (QVL) have been tested and qualified for use with this motherboard.
Click to download QVL