1.4.2 Core specifications

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CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket for the Intel® Pentium® 4 Processor, with 800/533/400 MHz system bus that allows 6.4GB/s, 4.3GB/s, and 3.2GB/s data transfer rates, respectively. The socket will support the Intel Prescott CPU when available.

North bridge controller. The Intel® 875P Memory Controller Hub (MCH) provides the CPU interface, DDR interface, AGP interface, and Hub Interface. The MCH manages the flow of information between these interfaces. Designed for use with the Intel® Pentium 4/Celeron processor, the MCH provides the processor interface with 800/533/400 MHz frequency, system memory interface with up to 6.4GB/s bandwidth in dual-channel mode, and 0.8V/1.5V AGP Interface Specification 3.0 that supports 8X/4X Fast Write protocol. The MCH interconnects to the south bridge ICH5R via the Intel® proprietary Hub Interface.

ATX 12V connector. This power connector connects the 4-pin 12V plug from the ATX 12V power supply.

DDR DIMM sockets. These four 184-pin DIMM sockets support up to 4GB system memory using unbuffered ECC or non-ECC PC3200/ PC2700/PC2100 DDR DIMMs.

Floppy disk connector. This connector accommodates the provided ribbon cable for the floppy disk drive. One side of the connector is slotted to prevent incorrect insertion of the floppy disk cable.

6IDE connectors. These dual-channel bus master IDE connectors support Ultra DMA/100/66, PIO Modes 3 & 4 IDE devices. Both the primary (blue) and secondary (black) connectors are slotted to prevent incorrect insertion of the IDE ribbon cable.

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ATX power connector. This 20-pin connector connects to an ATX 12V power supply. The power supply must have at least 1A on the +5V standby lead (+5VSB).

AGP Pro/8X slot. This Accelerated Graphics Port (AGP) Pro slot supports 0.8V/1.5V AGP 8X mode graphics cards for 3D graphical applications and delivers up to 2.1GB/s bandwidth.

9Standby power LED. This LED lights up if there is a standby power on the motherboard. This LED acts as a reminder to turn off the system power before plugging or unplugging devices.

10Flash ROM. This 4Mb firmware hub (FWH) contains the programmable BIOS program.

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Chapter 1: Product introduction