Essentials
Product Collection: Legacy Intel Xeon ProcessorsCode Name: Products formerly Nehalem EPVertical Segment: ServerProcessor Number: X5550Status: LaunchedLaunch Date: Q1'09Lithography: 45 nm
Performance
Number of Cores: 4Number of Threads: 8Processor Base Frequency: 2.66 GHzMax Turbo Frequency: 3.06 GHzCache: 8 MB SmartCacheBus Speed: 6.4 GT/s QPINumber of QPI Links: 2TDP: 95 WVID Voltage Range: 0.75V -1.35V
Memory Specifications
Max Memory Size (dependent on memory type): 144 GBMemory Types: DDR3 800/1066/1333Max Number of Memory Channels: 3Max Memory Bandwidth: 32 GB/sPhysical Address Extensions: 40-bitECC Memory Supported: Yes
Package Specifications
Sockets Supported: FCLGA1366Max CPU Configuration: 2TCASE: 75°CPackage Size: 42.5mm x 45mmProcessing Die Size: 263 mm2Number of Processing Die Transistors: 731 millionLow Halogen Options Available: See 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 Set: 64-bitIdle States: YesEnhanced Intel SpeedStep Technology: YesIntel Demand Based Switching: Yes
Security & Reliability
Intel Trusted Execution Technology: NoExecute Disable Bit: Yes
