Asus' P5N-D is an ATX motherboard for Intel processors. The motherboard's twin video expansion slots and on-board Scalable Link Interface chip set allow the motherboard to run two interconnected video cards for high-quality graphics. The motherboard also includes a number of special Asus features for energy efficiency and operating stability.
Processor
The P5N-D has an Intel 775 CPU slot. This slot supports select Core 2 Quad, Core 2 Extreme, Core 2 Duo, Pentium Extreme, Pentium D, and Pentium 4 processors that have been designed to fit in a 775 slot. The P5N-D supports processors that have been manufactured with Intel's 45 nanometer manufacturing technique for better efficiency and speed. The motherboard can toggle between front side bus speeds of 1,333 megahertz, 1,066 MHz, or 800 MHz.
RAM
The P5N-D has four DIMM RAM slots for memory upgrades. Each slot supports up to 2GB of RAM for a maximum of 8GB. The motherboard supports dual-channel DDR2 un-buffered RAM. It supports RAM that operates at 800, 667, or 533 MHz.
Expansion Slots
The motherboard can support up to two graphics cards via its two PCIe 2.0 x16 graphics card slots. These slots will work with Nvidia or AMD graphics cards but they will only support two graphics cards if both are compatible SLI-ready Nvidia cards. The motherboard also has two PCIe x1 slots and two PCI 2.2 slots for non-graphics upgrades, such as networking cards.
External Connections
An internal Realtek eight-channel high-definition audio controller powers the P5N-D's six external audio jacks. The motherboard also has external coaxial/optical S/PDIF ports. The P5N-D has two external PS/2 ports -- one for connecting a mouse and the other for a keyboard. The motherboard includes one LAN port and one IEEE 1394a port for networking. There are four USB 2.0 ports on the back panel along with one parallel port for connecting to other devices.
Internal Connections
Two internal USB connectors allow for up to four front USB ports, while an internal audio connector allows for front panel audio and a CD/AUX-in connector allows for audio routing directly from a disc player into the motherboard. The motherboard includes a single floppy disk drive connector and a single IDE connector for connecting legacy drives. Four SATA connectors allow you to connect up to four SATA hard drives or disc drives to the motherboard. The motherboard can power three fans. The P5N-D can also monitor a chassis intrusion detector.
Features
The P5N-D implements several Asus technologies including Asus EPU, Asus AI Nap, and Asus AI Gear 3 for energy efficiency. The P5N-D also uses Asus Q-Fan 2 for optimal fan usage with minimal noise. The motherboard uses Asus EZ Flash 2 to keep the motherboard BIOS up to date. It also supports CPU overclocking via AI Overclocking software. This makes it easier to monitor the effects of overclocking while Asus C.P.R. can restore the previous overclocking settings if the new settings cause the computer to malfunction.
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