System Architecture - Compaq Evo D500 Technical Reference Manual

Chapter 2 System Overview
2.4

SYSTEM ARCHITECTURE

The Compaq Deskpro and Evo systems covered in this guide feature an architecture based on the
Intel Pentium III or Celeron processor working with the Intel 815E chipset (Figure 2-9). All
models use SDRAM for system memory, provide AGP 4X graphics support, and include PCI bus
expansion capability. Standard configurations for Evo D500 small form factor models include
Celeron processors. Standard configurations for Deskpro EN models include Celeron and Pentium
III processors. Standard configurations for the Deskpro Workstation AP230 models include
Pentium III processors.
NOTE: This guide covers only Celeron- and Pentium III-based models of Deskpro and
Evo products. Pentium 4-based models of these series' are covered in another guide.
The 815E chipset includes the 82815 GMCH designed to support a Pentium III or Celeron
processor with FSB speeds of either 66-, 100- or 133-MHz. The GMCH also includes an SDRAM
controller supporting up to three PC133 DIMMs.
Two standard graphics configurations are available: The 82815 GMCH includes a i740-equivalent
AGP 4X graphics controller that is implemented in the "integrated" configuration while an
NVIDIA TNT Pro AGP 4X graphics controller is used for the "external" configuration.
All systems feature AC'97-compatible audio subsystems and include microphone and line inputs
and headphone and/or line outputs. The Deskpro EN Small Form Factor system features Compaq
Premier Sound components while Slim Desktop and Configurable Minitower systems provide a
business audio solution.
The 815E chipset also includes the 82801BA I/O Controller Hub (ICH2) that integrates two IDE
controllers with ATA100 support, two USB interfaces, and a PCI bus controller. Also integrated
into the 82801BA is an 82562-equivalent network interface controller. An SMC LPC47B357
Super I/O Controller provides serial, parallel, keyboard, mouse, and diskette drive interface
functions.
The Small Form Factor system uses a 120-watt power supply while Slim Desktop and
Configurable Minitower systems feature 200-watt power supplies.
Below is a matrix defining the standard configuration differences between the Deskpro EN and
the Deskpro Workstation AP230 models.
Processor
Graphics Integrated Direct AGP
or NVIDIA TNT2 Pro
Embedded
AC97 Audio
Hard Drive
Type
NOTE:
[1] Pentium 4-based models of this series are covered in another guide.
2-12 Compaq Deskpro and Evo Personal Computers
Featuring Intel Celeron and Pentium III Processors
Evo D500 SFF Deskpro EN [1]
Celeron [1] Celeron or Pentium III [1]
Integrated Direct AGP
or NVIDIA TNT2 Pro
All models
UATA-100
Fifth Edition – March 2002
Deskpro Workstation AP230
One of the following AGP 4X cards in
Select models
UATA-100 UATA-100 or SCSI Ultra 160
Pentium III
AGP slot:
Matrox Millennium G450,
NVIDIA Quadro2 EX,
or NVIDIA Quadro2 MXR
All models