Essentials
Product CollectionLegacy Intel® Xeon® ProcessorsCode NameProducts formerly Westmere EPVertical SegmentServerProcessor NumberE5640StatusDiscontinuedLaunch DateQ1'10Lithography32 nm
Performance
# of Cores4# of Threads8Processor Base Frequency2.66 GHzMax Turbo Frequency2.93 GHzCache12 MB SmartCacheBus Speed5.86 GT/s QPI# of QPI Links2TDP80 WVID Voltage Range0.750V-1.350V
Memory Specifications
Max Memory Size (dependent on memory type)288 GBMemory TypesDDR3 800/1066Max # of Memory Channels3Max Memory Bandwidth25.6 GB/sPhysical Address Extensions40-bitECC Memory Supported ‡Yes
Package Specifications
Sockets SupportedFCLGA1366Max CPU Configuration2TCASE77.6°CPackage Size42.5mm X 45mmLow Halogen Options AvailableSee MDDS
Advanced Technologies
Intel® Turbo Boost Technology ‡1.0Intel® Hyper-Threading Technology ‡YesIntel® Virtualization Technology (VT-x) ‡YesIntel® Virtualization Technology for Directed I/O (VT-d) ‡YesIntel® VT-x with Extended Page Tables (EPT) ‡YesIntel® 64 ‡YesInstruction Set64-bitInstruction Set ExtensionsIntel® SSE4.2Idle StatesYesEnhanced Intel SpeedStep® TechnologyYesIntel® Demand Based SwitchingYesThermal Monitoring TechnologiesNo
Security & Reliability
Intel® AES New InstructionsYesIntel® Trusted Execution Technology ‡YesExecute Disable Bit ‡Yes
