Essentials
Product CollectionLegacy Intel® Xeon® ProcessorsCode NameProducts formerly HarpertownVertical SegmentServerProcessor NumberL5420StatusDiscontinuedLaunch DateQ1'08Expected DiscontinuanceQ4'2010Lithography45 nm
Performance
# of Cores4Processor Base Frequency2.50 GHzCache12 MB L2Bus Speed1333 MHz FSBFSB ParityYesTDP50 WVID Voltage Range0.850V-1.3500V
Package Specifications
Sockets SupportedLGA771TCASE57°CPackage Size37.5mm x 37.5mmProcessing Die Size214 mm2# of Processing Die Transistors820 millionLow Halogen Options AvailableSee MDDS
Advanced Technologies
Intel® Turbo Boost Technology ‡NoIntel® Hyper-Threading Technology ‡NoIntel® Virtualization Technology (VT-x) ‡YesIntel® VT-x with Extended Page Tables (EPT) ‡NoIntel® 64 ‡YesInstruction Set64-bitIdle StatesYesEnhanced Intel SpeedStep® TechnologyYesIntel® Demand Based SwitchingYesThermal Monitoring TechnologiesYes
Security & Reliability
Intel® Trusted Execution Technology ‡NoExecute Disable Bit ‡Yes
