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SLBFD (Intel Xeon E5520)

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SLBFD specifications

General information
TypeCPU / Microprocessor
FamilyIntel Xeon
Processor number  ? E5520
Part numberAT80602002091AA
Frequency (GHz)  ? 2.267
Frequency in IDA mode (GHz)2.533
Bus speed (MHz)  ? 2933
Package type1366-land FC-LGA8
Socket typeSocket 1366 (LGA1366)
Architecture / Microarchitecture / Other
Core steppingD0
Processor coreNehalem-EP
Manufacturing technology (micron)0.045
Number of cores4
L2 cache size (MB)  ? 1
L3 cache size (MB)8
FeaturesEM64T technology  ? 
Enhanced SpeedStep technology  ? 
Execute disable bit  ? 
Hyper-Threading technology
Turbo Boost technology
Virtualization technology (VT-d)
Virtualization technology (VT-x)
Core voltage (V)  ? 0.75 - 1.35
Case temperature (°C)  ? 72
Thermal Design Power (Watt)  ? 80
Notes on sSpec SLBFD
  • This part has Enhanced Halt State enabled.
  • QuickPath Interconnect speed is 5.86 GT/s.
  • This part includes Turbo Boost Technology. Maximum performance increase in Turbo Boost mode is 133 MHz for 4 and 3 cores, and 266 MHz for 1 or 2 cores.
  • The part is discontinued. Last order date for OEM and boxed processors is September 28, 2012. Last shipment date for OEM processors is March 27, 2015.
  • The part supports DDR3-1066 and DDR3-800 memory.
  • The CPU supports ECC memory.

Related S-Spec numbers

In addition to the SLBFD S-Spec, this processor was also manufactured with a few pre-production S-Spec numbers:

SteppingS-Spec AT80602002091AA BX80602E5520
C0? Q1EA +  
D0 Q1GR +  
Unknown Q1A2 +  

NOTE: Engineering and qualifications samples are marked with this color


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