Compaq 850 manual System Architecture

Chapter 2 System Overview

2.4SYSTEM ARCHITECTURE

These systems feature architecture based on the Intel Pentium 4 processor and the Intel 850 chipset (Figure 2-6). These components are designed to compliment each other to provide very high desktop/minitower performance. Key technical highlights of this architecture include:

♦1.4 or 1.5-GHz Pentium 4 processor

♦Quad-pumped Front Side Bus (FSB) for 400-MHz performance

♦Dual-channel RDRAM controller supporting up to four PC800 RIMMs

♦Two IDE controllers supporting two UATA-100 hard drives each

♦Sound Blaster 128 audio subsystem

♦Five 33-MHz/32-bit PCI slots

♦AGP 4X slot (1.5-volt support only)

♦One parallel port

♦Two serial ports

♦Four USB ports

♦PS/2 mouse and keyboard interfaces

The Pentium 4 processor represents Intel’s latest IA-32 microprocessor design and features a hyper-pipelined, rapid-execution engine for improved system responsiveness and higher execution throughput. Internet and multimedia performance is improved further with additional streaming SIMD extensions (SSE2) designed to expedite video, speech, encryption, and photo processing tasks.

The 3.2 GB/s throughput of the FSB matches that of the dual-channel RDRAM used for system memory, reducing latency and providing high, balanced performance. The 82850 Memory Controller Hub (MCH) includes an AGP 4X interface supporting a 1.5-VDC graphics card in the AGP slot.

The 82801BA I/O Controller Hub (ICH2) and the LPC47B357 I/O Controller components provide most of the input/output functions listed previously. These systems also include an AGP 4X graphics card in the AGP slot and an Intel PRO/100+ Management Adapter (NIC) card in a PCI slot. Some models may also include a modem card and a SCSI host adapter installed in PCI slots.

2-8Compaq Deskpro EXS and Workstation 300 Personal Computers

Featuring the Intel Pentium 4 Processor

First Edition – December 2000