Intel Xeon E5-4640 vs. Intel Core 2 Quad Q8400

CPU Comparison, Reviews and Tests
Intel Xeon E5-4640
Intel Core 2 Quad Q8400

In depth comparison and review of Intel Xeon E5-4640 and Intel Core 2 Quad Q8400. Compare dimensions, performance, cache memory, number of cores, clock speed, RAM, power efficiency and other important specifications and features to easily choose the right CPU for you. Our goal is to help you uncover differences between the products and find the processor that will best fit your needs.

CPUs Specifications Comparison

Intel Xeon E5-4640 vs. Intel Core 2 Quad Q8400 Benchmark Chart
GENERAL Intel Xeon E5-4640 Intel Core 2 Quad Q8400
Product Type Processor Processor
Packaged Quantity 2 (specifications are for single item) -
PROCESSOR Intel Xeon E5-4640 Intel Core 2 Quad Q8400
Type Intel Xeon E5-4640 Intel Core 2 Quad Q8400
ARCHITECTURE
Processor Qty 1 1
Compatible Processor Socket LGA2011 Socket LGA775 Socket
Core Voltage 0.6 V - 1.35 V -
Manufacturing Process 32 nm 45 nm
Thermal Design Power 95 W 95 W
Thermal Specification - 71.4 °C
PCI Express Revision 3.0 -
PCI Express Lanes Qty 40 -
Architecture Features SpeedStep technology, Execute Disable Bit capability, Intel Trusted Execution Technology, Intel Turbo Boost Technology 2.0, Intel vPro Technology Enhanced SpeedStep technology, Execute Disable Bit capability, Intel Virtualization Technology, Intel 64 Technology, Enhanced Halt State (C1E), Intel Thermal Monitor 2
PERFORMANCE
Number of Cores 8-core Quad-Core
Number of Threads 16 threads -
Clock Speed (Frequency) 2.4 GHz 2.66 GHz
Max Turbo Speed 2.8 GHz -
Bus Speed 1600 MHz 1333 MHz
64-bit Computing Yes Yes
CACHE MEMORY
Cache 20 MB 4 MB
Cache Memory Details L3 - 16 MB L2 - 4 MB
Installed Size 20 MB 4 MB
EXPANSION & CONNECTIVITY Intel Xeon E5-4640 Intel Core 2 Quad Q8400
Compatible Slots 1 x processor - LGA2011 Socket 1 x processor - LGA775 Socket
MISCELLANEOUS Intel Xeon E5-4640 Intel Core 2 Quad Q8400
Compliant Standards Halogen-free -
Service & Support - Limited warranty - 3 years
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