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Differences What are the advantages of each

Front view of Intel Pentium E5400

Reasons to consider the
Intel Pentium E5400

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Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 1,632 vs 404 More than 4x better PassMark score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much better performance per watt 1.73 pt/W vs 0.25 pt/W More than 6.8x better performance per watt
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much higher Maximum operating temperature 74.1 °C vs 64.4 °C More than 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.49 GHz vs 3.6 GHz Around 25% better overclocked clock speed (Water)
Newer Jan, 2009 vs Jan, 2007 Release date over 2 years later
Front view of Intel Celeron D 365

Reasons to consider the
Intel Celeron D 365

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Much higher clock speed 3.6 GHz vs 2.7 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 4.75 GHz vs 3.75 GHz More than 25% better overclocked clock speed (Air)

Benchmarks Real world tests of Pentium E5400 vs Celeron D 365

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Pentium E5400  vs
Celeron D 365 
Clock speed 2.7 GHz 3.6 GHz
Cores Dual core Single core
Socket type
LGA 775

features

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

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.73 pt/W 0.25 pt/W
Typical power consumption 52.81W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 533 MHz

details

Pentium E5400  vs
Celeron D 365 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 65 nm
Transistor count 228,000,000 188,000,000
Max CPUs 1 1
Clock multiplier 13 27
Voltage range 0.85 - 1.36V 1.25 - 1.32V
Operating temperature Unknown - 74.1°C Unknown - 64.4°C

overclocking

Overclocked clock speed 3.75 GHz 4.75 GHz
Overclocked clock speed (Water) 4.49 GHz 3.6 GHz
Overclocked clock speed (Air) 3.75 GHz 4.75 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Pentium E5400
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Intel Celeron D 365
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