EssentialsProduct CollectionLegacy Intel® Core™ ProcessorsCode NameProducts formerly YorkfieldVertical SegmentDesktopProcessor NumberQ9500StatusDiscontinuedLithography45 nmPerformance Specifications# of Cores4# of Threads4Processor Base Frequency2.83 GHzCache6 MB L2 CacheBus Speed1333 MHzTDP95 WVID Voltage Range0.8500V-1.3625VSupplemental InformationEmbedded Options AvailableNoDatasheetView nowPackage SpecificationsSockets SupportedLGA775TCASE71.4°CPackage Size37.5mm x 37.5mmProcessing Die Size164 mm2# of Processing Die Transistors456 millionAdvanced TechnologiesIntel® Turbo Boost Technology ‡NoIntel® Hyper-Threading Technology ‡NoIntel® Virtualization Technology (VT-x) ‡YesIntel® 64 ‡YesInstruction Set64-bitIdle StatesYesEnhanced Intel SpeedStep® TechnologyYesIntel® Demand Based SwitchingNoThermal Monitoring TechnologiesYesSecurity & ReliabilityIntel® Trusted Execution Technology ‡NoExecute Disable Bit ‡Yes