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Essentials
Product Collection
Vertical Segment
Processor Number
Lithography
Product Collection
 Legacy Intel® Xeon® Processors Legacy Intel® Xeon® Processors Legacy Intel® Xeon® Processors
Vertical Segment
 Server Server Server
Processor Number
 X5660 E5640 E5606
Lithography
 32 nm 32 nm 32 nm
Product Collection
 Legacy Intel® Xeon® Processors Legacy Intel® Xeon® Processors Legacy Intel® Xeon® Processors
Vertical Segment
 Server Server Server
Processor Number
 X5660 E5640 E5606
Lithography
 32 nm 32 nm 32 nm
CPU Specifications
Total Cores
Total Threads
Max Turbo Frequency
Processor Base Frequency
Cache
Bus Speed
# of QPI Links
TDP
Total Cores
 6 4 4
Total Threads
 12 8 4
Max Turbo Frequency
 3.20 GHz 2.93 GHz
Processor Base Frequency
 2.80 GHz 2.66 GHz 2.13 GHz
Cache
 12 MB Intel® Smart Cache 12 MB Intel® Smart Cache 8 MB Intel® Smart Cache
Bus Speed
 6.4 GT/s 5.86 GT/s 4.8 GT/s
# of QPI Links
 2 2 2
TDP
 95 W 80 W 80 W
Total Cores
 6 4 4
Total Threads
 12 8 4
Max Turbo Frequency
 3.20 GHz 2.93 GHz
Processor Base Frequency
 2.80 GHz 2.66 GHz 2.13 GHz
Cache
 12 MB Intel® Smart Cache 12 MB Intel® Smart Cache 8 MB Intel® Smart Cache
Bus Speed
 6.4 GT/s 5.86 GT/s 4.8 GT/s
# of QPI Links
 2 2 2
TDP
 95 W 80 W 80 W
Supplemental Information
Marketing Status
Launch Date
Servicing Status
Embedded Options Available
Marketing Status
 Discontinued Discontinued Discontinued
Launch Date
 Q1'10 Q1'10 Q1'11
Servicing Status
 End of Servicing Lifetime End of Servicing Lifetime End of Servicing Lifetime
Embedded Options Available
 No No No
Marketing Status
 Discontinued Discontinued Discontinued
Launch Date
 Q1'10 Q1'10 Q1'11
Servicing Status
 End of Servicing Lifetime End of Servicing Lifetime End of Servicing Lifetime
Embedded Options Available
 No No No
Memory Specifications
Max Memory Size (dependent on memory type)
Memory Types
Max # of Memory Channels
Max Memory Bandwidth
Physical Address Extensions
ECC Memory Supported ‡
Max Memory Size (dependent on memory type)
 288 GB 288 GB 288 GB
Memory Types
 DDR3 800/1066/1333 DDR3 800/1066 DDR3 800/1066
Max # of Memory Channels
 3 3 3
Max Memory Bandwidth
 32 GB/s 25.6 GB/s 25.6 GB/s
Physical Address Extensions
 40-bit 40-bit 40-bit
ECC Memory Supported ‡
 Yes Yes Yes
Max Memory Size (dependent on memory type)
 288 GB 288 GB 288 GB
Memory Types
 DDR3 800/1066/1333 DDR3 800/1066 DDR3 800/1066
Max # of Memory Channels
 3 3 3
Max Memory Bandwidth
 32 GB/s 25.6 GB/s 25.6 GB/s
Physical Address Extensions
 40-bit 40-bit 40-bit
ECC Memory Supported ‡
 Yes Yes Yes
Package Specifications
Sockets Supported
Max CPU Configuration
TCASE
Package Size
Sockets Supported
 FCLGA1366,LGA1366 FCLGA1366,LGA1366 FCLGA1366,LGA1366
Max CPU Configuration
 2 2 2
TCASE
 81.3°C 77.6°C
Package Size
 42.5mmX45mm 42.5mm X 45mm 42.5mm X 45mm
Sockets Supported
 FCLGA1366,LGA1366 FCLGA1366,LGA1366 FCLGA1366,LGA1366
Max CPU Configuration
 2 2 2
TCASE
 81.3°C 77.6°C
Package Size
 42.5mmX45mm 42.5mm X 45mm 42.5mm X 45mm
Advanced Technologies
Intel® Turbo Boost Technology ‡
Intel® Hyper-Threading Technology ‡
Intel® 64 ‡
Instruction Set
Instruction Set Extensions
Idle States
Enhanced Intel SpeedStep® Technology
Intel® Demand Based Switching
Thermal Monitoring Technologies
Intel® Turbo Boost Technology ‡
 1.0 1.0 No
Intel® Hyper-Threading Technology ‡
 Yes Yes No
Intel® 64 ‡
 Yes Yes Yes
Instruction Set
 64-bit 64-bit 64-bit
Instruction Set Extensions
 Intel® SSE4.2 Intel® SSE4.2 Intel® SSE4.2
Idle States
 Yes Yes Yes
Enhanced Intel SpeedStep® Technology
 Yes Yes Yes
Intel® Demand Based Switching
 Yes Yes Yes
Thermal Monitoring Technologies
 No No No
Intel® Turbo Boost Technology ‡
 1.0 1.0 No
Intel® Hyper-Threading Technology ‡
 Yes Yes No
Intel® 64 ‡
 Yes Yes Yes
Instruction Set
 64-bit 64-bit 64-bit
Instruction Set Extensions
 Intel® SSE4.2 Intel® SSE4.2 Intel® SSE4.2
Idle States
 Yes Yes Yes
Enhanced Intel SpeedStep® Technology
 Yes Yes Yes
Intel® Demand Based Switching
 Yes Yes Yes
Thermal Monitoring Technologies
 No No No
Security & Reliability
Intel® AES New Instructions
Intel® Trusted Execution Technology ‡
Execute Disable Bit ‡
Intel® Virtualization Technology (VT-x) ‡
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Intel® VT-x with Extended Page Tables (EPT) ‡
Intel® AES New Instructions
 Yes Yes Yes
Intel® Trusted Execution Technology ‡
 Yes Yes Yes
Execute Disable Bit ‡
 Yes Yes Yes
Intel® Virtualization Technology (VT-x) ‡
 Yes Yes Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
 Yes Yes Yes
Intel® VT-x with Extended Page Tables (EPT) ‡
 Yes Yes Yes
Intel® AES New Instructions
 Yes Yes Yes
Intel® Trusted Execution Technology ‡
 Yes Yes Yes
Execute Disable Bit ‡
 Yes Yes Yes
Intel® Virtualization Technology (VT-x) ‡
 Yes Yes Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
 Yes Yes Yes
Intel® VT-x with Extended Page Tables (EPT) ‡
 Yes Yes Yes
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