34 Setting Upw w w . j p . d e l l . c o m | s u p p o r t . j p . d e l l . c o mHyper-ThreadingHINT: Hyper-Threading is supportedonly on computers thathave 3.06-GHzmicroprocessors (orhigher) installed.Hyper-Threading is an Intel ® technology that can enhance overallperformance by allowing one physical microprocessor to function as twological microprocessors, capable of performing certain tasks simultaneously.It is recommended that you use the Microsoft ® Windows ® XP operatingsystem because Windows XP is optimized to take advantage of Hyper-Threading technology. While many programs can benefit fromHyper-Threading technology, some programs have not been optimized forHyper-Threading and may require an update from the softwaremanufacturer. Contact the software manufacturer for updates andinformation on using your software with Hyper-Threading.To determine if your computer is using Hyper-Threading technology:1 Click the Start button, right-click My Computer, and then clickProperties.2 Click Hardware and click Device Manager.3 In the Device Manager window, click the plus (+) sign next to theprocessor type. If Hyper-Threading is enabled, the processor is listedtwice.You can enable or disable Hyper-Threading through the system setupprogram. For more information on accessing the system setup program, seepage 100. For more information on Hyper-Threading, search the KnowledgeBase on the Dell Support website at support.dell.com.Turning Off Your ComputerNOTICE: To avoid losing data, turn off your computer by performing aMicrosoft ® Windows® operating system shutdown, as described next, ratherthan by pressing the power button.1 Save and close any open files, exit any open programs, click the Startbutton, and then click Turn Off Computer.2 In the Turn off computer window, click Turn off.The computer turns off after the shutdown process finishes.