VIA® P4X266A & VT8233A Chipset

Socket 478 for Pentium® 4 processors

Three 184-pin DDR DIMMs with DDR SDRAM support, up to 3GB

VIA VT6202 USB 2.0 Host Controller (optional)

AC97 Audio Codec on board

RealTek 8100/B LAN Chip on board (optional)

PROMISE PDC20265R IDE RAID controller (optional)

P4VXAD V3.X mainboard is an ATX mainboard that uses a 4-layer printed circuit board and measures 305 mm x 244 mm. The mainboard features a Socket 478 that accommodates Intel® Pentium® 4 processors supporting front side bus (FSB) speeds of 400/533 MHz.

Note: SDRAM provides 800 MBps or 1 GBps data transfer depending on whether the bus is 100MHz or 133MHz. Double Data Rate SDRAM (DDR SDRAM) doubles the rate to 1.6 GBps and 2.1 GBps. DDR SDRAM uses additional power and ground lines and requires 184-pin DIMM modules rather than the 168-pin DIMMs used by SDRAM.

PROCESSORS

One Socket 478 supports the

Intel Pentium 4 processor (478pins)

CHIPSET

VIA® P4X266A (VT8753A) & VT8233A

VT8753A V-Link Host system controller and VT8233A V-Link Client to PCI/LPC bridge

Peak Bandwidth 266MB/S 8-bit V-link Host Controller

LPC I/O - ITE8705F

System Hardware Monitor: Integrated in IT8705F

VIA VT6202 USB 2.0 Host Controller (optional)

LAN: RealTek 8100/B (optional)

PROMISE PDC20265R IDE RAID controller (optional)

AC97 Audio Codec

Compliant with AC97 2.2 specification

MEMORY

Three 184-pin DDR DIMM sockets for 2.5V DDR SDRAM (DDR266/DDR200)

Maximum: 1.5GB (Unbuffered Memory) / 3GB(Buffered Memory)

SYSTEM BIOS

Award 2Mb Flash EEPROM

Supports Plug and Play 1.0A, APM 1.2, Multi Boot, DMI

Full Support for ACPI revision 1.0 specification

I/O INTERFACE

Supports Plug and Play function

PS/2 keyboard and PS/2 mouse connectors

Dual USB Ports and an optional LAN connector

One - EPP/ECP mode parallel port

Two - 16550 high-speed serial I/O ports

Audio Ports (Line-in, Line-out, Mic-in, CD-in and game port)

Supports eight ATA/ATAPI devices (four optional)

Standard: Dual PCI IDE interfaces - support four IDE devices (PIO mode 4, DMA Mode 2, Ultra DMA 66/100/133)

Option: Two independent ATA channels for another four IDE devices (PIO mode 4, DMA Mode 2, Ultra DMA 66/100)

Supports 360K~2.88M Byte, 3 Mode FDDs or LS120

ATX Power Supply Connector

ports, Headers and Others:

IrDA header

Two Extra USB Ports (LUSB1 or USB2)

Front Panel MIC/Line-Out header

HDD LED, ACPI MSG LED, Reset Switch, Power Switch headers

CPU and Case Fan headers

LAN Card Wake Up/Internal Modem Ring Wake Up headers

RTC & BATTERY

VT8233A included 256 bytes of CMOS

With CMOS SRAM hardware clear jumper

EXPANSION SLOTS

5 PCI slots, 1 AGP slot, 1 CNR slot

FORM FACTOR

ATX (305mm*244mm), 4 Layers