The P5N-D is a NVIDIA 750i SLI chipset-based motherboard that combines powerful performance with great energy efficiency; and supports NVIDIA SLI technology with PCI Express 2.0 for extreme graphics performance. It also comes with the worlds first ASUS EPU (Energy Processing Unit), allowing the CPU power supply to be digitally monitored and fine-tuned with improved VRM efficiency in heavy or light loadings - attaining the best possible power efficiency and energy savings to help save the environment.

• Intel Core2 Quad / Core2 Extreme / Core2 Duo / Pentium Extreme / Pentium D / Pentium 4 Processors
• NVIDIA 750i SLI chipset
• ASUS EPU (Energy Processing Unit)
• ASUS Precision Tweaker 2
• Support PCIe 2.0 Dual x16 SLI
• ASUS Q-Shield

• CPU: Intel Socket 775 Core2 Quad / Core2 Extreme / Core2 Duo / Pentium Extreme / Pentium D / Pentium 4 Processors. Compatible with Intel 05B/05A/06 processors. Support Intel next generation 45nm CPU.
• Chipset: NVIDIA nForce 750i SLI.
• Front Side Bus: 1333/1066/800 MHz.
• Memory: 4 x DIMM, Max. 8 GB, DDR2 800/667/533 Non-ECC,Un-buffered Memory. Dual Channel memory architecture.
• Expansion Slots: 2 x PCIe 2.0 x16: Single VGA mode: x16. SLI mode: Hardware ready for x16, x16. 2 x PCIe x1. 2 x PCI 2.2.
• Scalable Link Interface (SLI): Support two identical NVIDIA SLI-Ready graphics cards (Hardware ready for x16, x16).
• Storage Southbridge:
  - 1 xUltraDMA 133/100/66/33.
  - 4 xSATA 3 Gb/s ports NVIDIA MediaShield
  - RAID: Support RAID 0,1,0+1,5,JBOD span cross Serial ATA drives.
• LAN: NVIDIA nForce 750i SLI built-in Gigabit MAC with external PHY.
• Audio: Realtek ALC883 8-Channel High Definition Audio CODEC. Coaxial / Optical S/PDIF out ports. Support Jack-Sensing, Enumeration, Multi-streaming.
• IEEE 1394: VIA6308P controller supports 2 x 1394a ports (one at mid-board; one at back panel).
• USB: 8 USB 2.0 ports (4 ports at mid-board, 4 ports at back panel).
• Special Features: Multi-language BIOS. ASUS MyLogo 2.
• Back Panel I/O Ports:
  - 1 x Parallel.
  - 1 x PS/2 Keyboard.
  - 1 x PS/2 Mouse.
  - 1 x IEEE 1394a.
  - 1 x LAN(RJ45) port.
  - 4 x USB 2.0/1.1.
  - 8 Channel Audio I/O.
• Internal I/O Connectors:
  - 2 x USB connectors support additional 4 USB ports.
  - 1 x Floppy disk drive connector.
  - 1 x IDE connector.
  - 4 x SATA connectors.
  - 1 x IEEE 1394a connector.
  - 1 x CPU Fan connector.
  - 1 x Chassis Fan connector.
  - 1 x Power Fan connector.
  - 1 x S/PDIF Out connector.
  - 1 x4-pin ATX 12V Power connector.
  - 1 x 24 -pin ATX Power connector.
  - Front panel audio connector.
  - Chassis Intrusion connector.
  - CD/AUX audio in.
  - System Panel Connector.
• BIOS:
  - 8 MB Flash ROM.
  - DMI 2.0.
  - PnP.
  - WfM 2.0.
  - SM BIOS 2.4.
  - Award BIOS.
  - ASUS EZ Flash 2.
  - ASUS CrashFree BIOS 2.
• Manageability: WfM 2.0,DMI 2.0,WOL/WOR by PME,WOR by Ring,PXE,AI NET2 WO USB/KB/MS.
• Accessories:
  - SLI connector.
  - SATA cables.
  - IDE cable.
  - FDD cable.
  - ASUS Q-shield.
  - 2-port USB 2.0 module.
  - 2 in 1 ASUS Q-Connector kit.
  - 1 x Optional Fan for Water-Cooling or Passive-Cooling only.
  - User's manual.
• Support Disc: Drivers.
  - ASUS PC Probe II.
  - ASUS AI Suite.
  - Anti-virus software (OEM version).
  - ASUS Update.
• Form Factor: ATX Form Factor. 12 inch x 9.6 inch (30.5 cm x 24.5 cm).

$20 End-User Mail-In Rebate: ASUS is now presenting a mail-In rebate for ASUS P5N-D Socket 775 ATX Motherboard. Promotion begins 11/01/09 and ends on 11/30/09. This promotion cannot be combined with any other promotion. Claim your rebate through the rebate form and follow mailing instructions. Note, incomplete forms will be denied as well as forms mailed too late. Manufacturer is not responsible for lost or misdirected mail. The promotion is not retroactive. Click here to download the rebate form.