Essentials
Product CollectionIntel® Xeon® Processor E5 FamilyCode NameProducts formerly Sandy Bridge EPVertical SegmentServerProcessor NumberE5-2643StatusDiscontinuedLaunch DateQ1'12Expected DiscontinuanceQ2'15Lithography32 nm
Performance
# of Cores4# of Threads8Processor Base Frequency3.30 GHzMax Turbo Frequency3.50 GHzCache10 MB SmartCacheBus Speed8 GT/s QPI# of QPI Links2TDP130 WVID Voltage Range0.60V-1.35V
Memory Specifications
Max Memory Size (dependent on memory type)384 GBMemory TypesDDR3 800/1066/1333/1600Max # of Memory Channels4Max Memory Bandwidth51.2 GB/sECC Memory Supported ‡Yes
Expansion Options
Scalability2S OnlyPCI Express Revision3.0Max # of PCI Express Lanes40
Package Specifications
Sockets SupportedFCLGA2011Max CPU Configuration2TCASE73°CPackage Size52.5mm x 45.0mmLow Halogen Options AvailableSee MDDS
Advanced Technologies
Intel® Turbo Boost Technology ‡2.0Intel® vPro™ Platform Eligibility ‡YesIntel® 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® AVXIdle StatesYesEnhanced Intel SpeedStep® TechnologyYesIntel® Demand Based SwitchingYesThermal Monitoring TechnologiesYesIntel® Flex Memory AccessNoIntel® Identity Protection Technology ‡No
Security & Reliability
Intel® AES New InstructionsYesIntel® Trusted Execution Technology ‡YesExecute Disable Bit ‡Yes
