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Differences What are the advantages of each

Front view of Intel Core2 Duo E6400

Reasons to consider the
Intel Core2 Duo E6400

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CPUBoss is not aware of any important advantages of the Core2 Duo E6400 vs the Core i3 550.

Front view of Intel Core i3 550

Reasons to consider the
Intel Core i3 550

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Much higher clock speed 3.2 GHz vs 2.13 GHz More than 50% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
More threads 4 vs 2 Twice as many threads
Much higher Maximum operating temperature 72.6 °C vs 61.4 °C Around 20% higher Maximum operating temperature

Benchmarks Real world tests of Core2 Duo E6400 vs Core i3 550

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E6400
91,000 MB/s
Core i3 550
128,500 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E6400  vs
Core i3 550 
Clock speed 2.13 GHz 3.2 GHz
Cores Dual core Dual core
Socket type
LGA 775
LGA 1156

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 73W
Annual home energy cost 15.66 $/year 17.59 $/year
Annual commercial energy cost 56.94 $/year 63.95 $/year
Performance per watt 1.35 pt/W 1.98 pt/W
Typical power consumption 52.81W 59.31W

details

Core2 Duo E6400  vs
Core i3 550 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.25 MB/core
Manufacture process 65 nm 32 nm
Transistor count 167,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 8 24
Voltage range 0.85 - 1.5V 0.65 - 1.4V
Operating temperature Unknown - 61.4°C Unknown - 72.6°C

overclocking

Overclock popularity 15 17
Overclocked clock speed 3.33 GHz 4.54 GHz
Overclocked clock speed (Water) 3.33 GHz 3.2 GHz
Overclocked clock speed (Air) 3.33 GHz 4.54 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 733 MHz

bus

Architecture FSB DMI
Number of links 1 1
Intel Core2 Duo E6400
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Intel Core i3 550
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