Dell Precision T5400 (Late 2007) - Manual (Page 49)

Advanced Features 49
NOTE: For more information on power management, see your operating system
documentation.
Hyperthreading and Multi-Core Technology
Hyperthreading is an Intel technology that can enhance overall computer
performance by allowing one physical processor to function as two logical
processors that are capable of performing certain tasks simultaneously. Multi-
core processors contain two or more physical computational units inside a
single CPU package, thereby increasing computing efficiency and multi-
tasking ability. Intel has implemented this technology in its Dual-Core and
Quad-Core processors. These processors have two and four computational
units respectively. It is recommended that you use the Microsoft Windows XP
Service Pack 1 (SP1) or higher or Windows Vista operating systems which are
optimized to take advantage of these technologies.
While many programs can benefit from hyperthreading and multi-core
technology, some programs may have not been optimized for them and may
require an update from the software manufacturer. Contact the software
manufacturer for updates and information about using hyperthreading or
multi-core technology with your software. To determine if your computer is
using hyperthreading technology, check the system setup option for
hyperthreading under the Performance tab (see "System Setup" on page 290).
About RAID Configurations
This section provides an overview of the RAID configuration that you might
have selected when you purchased your computer. While there are many RAID
configurations available in the computer industry for different types of uses,
Dell offers RAID level 0, RAID level 1, or RAID level 5 on your Dell Precision
computer.
A RAID level 0 configuration is recommended for high-performance
programs, and a RAID level 1 configuration is recommended for users that
desire a high level of data integrity. A RAID level 5 configuration provides for
both data integrity and high performance. RAID levels do not represent a
hierarchy. A RAID level 5 configuration is not inherently better or worse than a
RAID level 0 configuration.
The Intel RAID controller on your computer can only create a RAID level 0
configuration using two or three physical drives. If a third drive is present,
then that drive can be made part of a RAID level 0 configuration using the