Chapter 2 System Overview
Compaq Deskpro Personal Computers
Third Edition – April 2001
2-12
2.4 SYSTEM ARCHITECTURE
The Compaq Deskpro 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 Deskpro EN models include Celeron and Pentium III
processors. Standard configurations for Deskpro Workstation AP230 models include Pentium III
processors.
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 Slim 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.
Deskpro EN Deskpro Workstation AP230
Processor Celeron or Pentium III Pentium III
Graphics Integrated Direct AGP
or NVIDIA TNT2 Pro
One of the following AGP 4X cards
in AGP slot:
Matrox Millennium G450,
NVIDIA Quadro2 EX,
or NVIDIA Quadro2 MXR
Embedded AC97 Audio Select models All models
Hard Drive Type UATA-100 UATA-100 or SCSI Ultra 160
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