Intel Xeon E5645 vs. Intel Xeon E5-2665

CPU Comparison, Reviews and Tests
Intel Xeon E5645
Intel Xeon E5-2665

Detailed comparison and review of Intel Xeon E5645 and Intel Xeon E5-2665. With our comprehensive overview, you can simply compare overall performance, cache sizes, RAM, power efficiency, architecture, but also other key features of both processors and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the processor that best fits your needs and expectations.

CPUs Specifications Comparison

Intel Xeon E5645 vs. Intel Xeon E5-2665 Benchmark Chart
GENERAL Intel Xeon E5645 Intel Xeon E5-2665
Product Type Processor Processor
PROCESSOR Intel Xeon E5645 Intel Xeon E5-2665
Type Intel Xeon E5645 Intel Xeon E5-2665
ARCHITECTURE
Processor Qty 1 1
Max Supported Qty 1 -
Compatible Processor Socket LGA1366 Socket LGA2011 Socket
Core Voltage 0.75 V - 1.35 V 0.6 V - 1.35 V
Manufacturing Process 32 nm 32 nm
Thermal Design Power 80 W 115 W
Thermal Specification 76.2 °C 81.8 °C
PCI Express Revision - 3.0
PCI Express Lanes Qty - 40
Architecture Features Hyper-Threading Technology, Demand Based Switching, Execute Disable Bit capability, Intel Virtualization Technology SpeedStep technology, Execute Disable Bit capability, Intel Turbo Boost Technology, Intel Trusted Execution Technology, Intel vPro Technology
PERFORMANCE
Number of Cores 6-core 8-core
Number of Threads 12 threads 16 threads
Clock Speed (Frequency) 2.4 GHz 2.4 GHz
Max Turbo Speed 2.67 GHz 3.1 GHz
Bus Speed 1333 MHz 1600 MHz
64-bit Computing Yes Yes
CACHE MEMORY
Cache 12 MB 20 MB
Cache Memory Details L2 - 6 x 256 KB
L3 - 12 MB		 Smart Cache - 20 MB
Installed Size 12 MB 20 MB
Type Advanced Smart Cache -
EXPANSION & CONNECTIVITY Intel Xeon E5645 Intel Xeon E5-2665
Compatible Slots 1 x processor 1 x processor - LGA2011 Socket
MISCELLANEOUS Intel Xeon E5645 Intel Xeon E5-2665
Included Accessories Cooler (fansink) Passive heatsink
Compliant Standards RoHS RoHS
Service & Support 1-year warranty Limited warranty - 1 year
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