P5G31D-M PRO

    • ASUS EPU
    • ASUS Turbo Key
    • ASUS Xtreme Phase
    • ASUS Anti-Surge Protection
    • ASUS 2oz Copper PCB
    • 100% All High-quality Conductive Polymer Capacitors
      Product Image
      LGA775 Intel® 45nm Processor Ready

      This motherboard supports the latest Intel® Quad-core processors in LGA775 package. It also can support Intel® next generation 45nm Multi-Core CPU. It´s excellent for multi-tasking, multi-media and enthusiastic gamers with 1600(O.C.)/1333 / 1066 MHz FSB. Intel® Quad-core is one of the most powerful CPU in the world.

      LGA775 Intel® Core™2 Processor

      This motherboard supports the latest Intel® Core™2 processors in LGA775 package. With new Intel® Core™ microarchitecture technology and 1600(O.C.) MHz FSB, Intel® Core™2 processor is one of the most powerful and energy efficient CPU in the world.

      FSB 1600 support (O.C.)

      ASUS’s exclusive overclocking design now unleashes the ultimate potential of the Intel® Core™2 processor. With the new Intel 45nm micro-architecture technology and FSB 1600 (O.C.) / 1333 / 1066 / 800 MHz, this motherboard allows you to enjoy the latest technology supported by one of the most powerful and energy efficient CPUs in the world.

      Intel® G31 Chipset

      The Intel® G31 Express Chipset boosts your gaming and multimedia experience with the integrated graphics engine Intel® Graphics Media Accelerator 3100. It supports 1066MHz FSB (front-side-bus), and delivers breakthrough advances in 3D and 2D graphics; and video capabilities. This integrated chipset is able to meet the changing display requirements of visually rich applications and features the Intel® Clear Video Technology - which trailblazes new standards in high-definition video, crisp imaging, and accurate color control.

      Anti-Surge Protection

      This special design prevents expensive devices and the motherboard from damage caused by power surges.

      Dual-Channel DDR2 1066 (O.C.)

      Dual-channel DDR2 technology doubles the bandwidth of your system memory and hence boost the system performance to out perform any memory existing solutions in the market.

      Turbo Key

      ASUS Turbo Key allows you to turn the PC power button into an overclocking button. After you easy setup, Turbo Key boosts performances without interrupting ongoing work or games, simply through pressing the button.


      The ASUS EPU (Energy Processing Unit) provides total system power management by detecting current PC loadings and intelligently moderating power in real-time. It automatically provides the most appropriate power usage for the CPU, VGA card, hard drives, and CPU/chassis fans- helping save power and money!

      ASUS 8-Phase Power Design

      Longer Life, & Higher Efficiency!
      With power efficiency so important to operating temperatures, ASUS 8-Phase VRM design leads the industry with its 96% power efficiency. High quality power components such as low RDS (on) MOSFETs for minimum switching loss & lower temperatures, Ferrite core chokes with lower hysteresis loss, and high quality conductive polymer capacitors all add up to ensure longer component life and lower power loss - creating more energy efficiency.

      100% All High-quality Conductive Polymer Capacitors! (VRM 5000hrs lifespan @105°C, 500,000hrs @65°C)

      This motherboard uses all high-quality conductive polymer capacitors onboard for durability, improved lifespan, and enhanced thermal capacity.

      Gigabit Lan

      The on-board LAN controller is a highly integrated GbLAN controller. It is enhanced with an ACPI management function to provide efficient power management for advanced operating systems.

      SATA 3Gb/s

      Serial ATA3.0Gb/s is the next generation ATA specification that provides scalable performance foroday and tomorrow. With up to 300MB/s data transfer rate, Serial ATA II is faster than current Parallel ATA, while providing 100% software compatibility.

      EZ Flash 2

      EZ Flash 2 is a user-friendly BIOS update utility. Simply launch this tool and update BIOS from a USB flash disk before entering the OS. You can update your BIOS only in a few clicks without preparing an additional floppy diskette or using an OS-based flash utility.

      CrashFree BIOS 3

      The ASUS CrashFree BIOS 3 allows users to restore corrupted BIOS data from a USB flash disk containing the BIOS file. This utility saves users the cost and hassle of buying a replacement BIOS chip.

      ASUS Q-Fan

      ASUS Q-Fan technology intelligently and automatically adjusts CPU fan speeds according to system load and temperature, enabling users to work in a distraction-free environment with minimal noise.

      MyLogo 2

      You can convert your favorite photo into a 256-color boot logo for a more colorful and vivid image on your screen.


      The motherboard and its packaging comply with the European Union´s Restriction on the use of Hazardous Substances (RoHS). This is in line with the ASUS vision of creating environment-friendly and recyclable products and packaging to safeguard consumers´ health while minimizing the impact on the environment.