Advanced Features 39NOTE: For more information on power management, see your operating systemdocumentation.Hyperthreading and Multi-Core TechnologyHyperthreading is an Intel technology that can enhance overall computerperformance by allowing one physical processor to function as two logicalprocessors that are capable of performing certain tasks simultaneously. Multi-core processors contain two or more physical computational units inside asingle CPU package, thereby increasing computing efficiency and multi-tasking ability. Intel has implemented this technology in its Dual-Core andQuad-Core processors. These processors have two and four computationalunits respectively. It is recommended that you use the Microsoft Windows XPService Pack 1 (SP1) or higher or Windows Vista operating systems which areoptimized to take advantage of these technologies.While many programs can benefit from hyperthreading and multi-coretechnology, some programs may have not been optimized for them and mayrequire an update from the software manufacturer. Contact the softwaremanufacturer for updates and information about using hyperthreading ormulti-core technology with your software. To determine if your computer isusing hyperthreading technology, check the system setup option forhyperthreading under the Performance tab (see "System Setup" on page 290).About RAID ConfigurationsNOTE: RAID levels 5 and 10 are only available via an optional PCI Express RAIDcontroller card.NOTE: RAID for SATA 1.0 is not supported.This section provides an overview of the RAID configuration that you mighthave selected when you purchased your computer. Although there are severalRAID configurations available in the computer industry for different types ofuses, Dell offers RAID level 0, RAID level 1, or, with an optional PCI ExpressRAID controller, RAID level 5 or RAID level 10 on your Dell Precisioncomputer. A RAID level 0 configuration is recommended for high-performance programs, and a RAID level 1 configuration is recommended forusers that desire a high level of data integrity. A RAID level 5 or a RAID level10 configuration provides for both data integrity and higher access speeds.