Introduction 1-1
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Dell
®
OptiPlex
®
GX1 and GX1p mini tower Managed PC systems are high-speed,
expandable personal computers designed around the Intel
®
Pentium
®
II microproces-
sor. Each computer system uses a high-performance Peripheral Component
Interconnect (PCI) design that allows you to configure the computer system to your
initial requirements and then add Dell-supported upgrades as necessary. These sys-
tems also support the Industry-Standard Architecture (ISA) bus for older expansion
devices.
This chapter describes the major hardware and software features of your system, pro-
vides information about accessing the online documentation, and tells you where to
find help if you need it.
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Your system offers the following features:
An Intel Pentium II microprocessor that runs at one of the following speeds:
— An internal speed of 266 or 333 megahertz (MHz) and an external speed of
66 MHz
— An internal speed of 350, 400, or 450 MHz and an external speed of
100 MHz
The Intel Pentium II microprocessor includes MMX
™
technology designed to
handle complex multimedia and communications software. This microprocessor
incorporates new instructions and data types as well as a technique called single
instruction, multiple data (SIMD) that allows the microprocessor to process multi-
ple data elements in parallel, thereby improving overall system performance.
The Pentium II microprocessor has a 16-kilobyte (KB) internal data cache and a
16-KB internal instruction cache, an internal math coprocessor, and other
advanced internal logic.
A keyboard command (<Ctrl><Alt><\>) that lets you switch between the micro-
processor’s rated speed and a slower compatibility speed.
NOTE: This keyboard command is not available under the Microsoft
®
Windows NT
®
and IBM
®
OS/2
®
operating systems.
