Dell XPS /Dimension Owner's Manual - Page 32

Intel® Performance Acceleration Technology, DDR Memory and Processor Front-Side Bus, Hyper-Threading

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www.dell.com | support.dell.com Intel® Performance Acceleration Technology Your Dimension™ XPS computer is equipped with the Intel® 875P chipset, which utilizes Performance Acceleration Technology (PAT). PAT is designed to optimize performance by reducing the latency between DDR 400 memory and 800 front-side bus processors, and helps provide high performance to meet the requirements for today's demanding software. DDR Memory and Processor Front-Side Bus The performance of your computer's DDR memory depends on the type of memory installed and the clock speed of your processor. The following table indicates the memory performance resulting from different combinations of memory and front-side bus: Memory type DDR 400 (PC3200) DDR 333 (PC2700) 800 front-side bus processor performs at 400 MHz performs at 320 MHz 533 front-side bus processor performs at 333 MHz performs at 333 MHz For information on installing memory, see page 86. For information on the type of memory supported by your computer, see "Memory" on page 120. Hyper-Threading NOTE: Hyper-Threading is supported only on computers that have 3.06-GHz (or higher) microprocessors installed. Hyper-Threading is an Intel® technology that can enhance overall computer performance by allowing one physical microprocessor to function as two logical microprocessors, capable of performing certain tasks simultaneously. It is recommended that you use the Microsoft® Windows® XP operating system because Windows XP is optimized to take advantage of Hyper-Threading technology. While many programs can benefit from Hyper-Threading, some programs have not been optimized for Hyper-Threading and may require an update from the software manufacturer. Contact the software manufacturer for updates and information about using Hyper-Threading with your software. 32 Optimizing Pe r for mance

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32
Optimizing Performance
www.dell.com | support.dell.com
Intel
®
Performance Acceleration Technology
Your Dimension™ XPS computer is equipped with the Intel
®
875P chipset, which utilizes
Performance Acceleration Technology (PAT). PAT is designed to optimize performance by
reducing the latency between DDR 400 memory and 800 front-side bus processors, and
helps provide high performance to meet the requirements for today’s demanding software.
DDR Memory and Processor Front-Side Bus
The performance of your computer’s DDR memory depends on the type of memory
installed and the clock speed of your processor. The following table indicates the memory
performance resulting from different combinations of memory and front-side bus:
For information on installing memory, see page 86. For information on the type of memory
supported by your computer, see "Memory" on page 120.
Hyper-Threading
NOTE:
Hyper-Threading is supported only on computers that have 3.06-GHz (or higher)
microprocessors installed.
Hyper-Threading is an Intel
®
technology that can enhance overall computer performance
by allowing one physical microprocessor to function as two logical microprocessors, capable
of performing certain tasks simultaneously. It is recommended that you use the Microsoft
®
Windows
®
XP operating system because Windows XP is optimized to take advantage of
Hyper-Threading technology. While many programs can benefit from Hyper-Threading,
some programs have not been optimized for Hyper-Threading and may require an update
from the software manufacturer. Contact the software manufacturer for updates and
information about using Hyper-Threading with your software.
Memory type
800 front-side bus
processor
533 front-side bus
processor
DDR 400 (PC3200)
performs at 400 MHz
performs at 333 MHz
DDR 333 (PC2700)
performs at 320 MHz
performs at 333 MHz