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Chapter 2 System Overview
Compaq Deskpro EXS and Workstation 300 Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition – December 2000
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2.4 SYSTEM 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.