Intel Xeon E5645 vs. Intel Xeon E5503

CPU Comparison, Reviews and Tests
Intel Xeon E5645
Intel Xeon E5503

Side by side comparison and review of Intel Xeon E5645 and Intel Xeon E5503. Compare overall performance, core and thread counts, cache memory, speed, power efficiency, dimensions, socket compatibility and other key specifications and features to simplify the choice of your perfect CPU. Our goal is to make it easier for you to decide on the processor that will best meet your expectations by revealing the main differences between the products.

CPUs Specifications Comparison

Intel Xeon E5645 vs. Intel Xeon E5503 Benchmark Chart
GENERAL Intel Xeon E5645 Intel Xeon E5503
Product Type Processor Processor
PROCESSOR Intel Xeon E5645 Intel Xeon E5503
Type Intel Xeon E5645 Intel Xeon E5503
ARCHITECTURE
Processor Qty 1 1
Max Supported Qty 1 -
Compatible Processor Socket LGA1366 Socket LGA1366 Socket
Core Voltage 0.75 V - 1.35 V 0.75 V - 1.35 V
Manufacturing Process 32 nm 45 nm
Thermal Design Power 80 W 80 W
Thermal Specification 76.2 °C 76 °C
Architecture Features Hyper-Threading Technology, Demand Based Switching, Execute Disable Bit capability, Intel Virtualization Technology Enhanced SpeedStep technology, Demand Based Switching, Execute Disable Bit capability, Intel 64 Technology, Intel Virtualization Technology for Directed I/O (VT-d), Idle States, Intel VT-x with Extended Page Tables (EPT)
PERFORMANCE
Number of Cores 6-core Dual-Core
Number of Threads 12 threads 2 threads
Clock Speed (Frequency) 2.4 GHz 2 GHz
Max Turbo Speed 2.67 GHz -
Bus Speed 1333 MHz 800 MHz
64-bit Computing Yes Yes
CACHE MEMORY
Cache 12 MB 4 MB
Cache Memory Details L2 - 6 x 256 KB
L3 - 12 MB		 Smart Cache - 4 MB
Installed Size 12 MB 4 MB
Type Advanced Smart Cache -
EXPANSION & CONNECTIVITY Intel Xeon E5645 Intel Xeon E5503
Compatible Slots 1 x processor 1 x processor
MISCELLANEOUS Intel Xeon E5645 Intel Xeon E5503
Included Accessories Cooler (fansink) Heat sink
Compliant Standards RoHS RoHS
Service & Support 1-year warranty Limited warranty - 1 year - on-site
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