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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 higher clock speed 2.7 GHz vs 1.3 GHz More than 2x higher clock speed
Much more l2 cache 2 MB vs 0.25 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 3.75 GHz vs 1.4 GHz Around 2.8x better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Water) 4.49 GHz vs 1.4 GHz Around 3.2x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of Intel Celeron 725C

Reasons to consider the
Intel Celeron 725C

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 8.13W vs 52.81W 6.5x lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer Apr, 2012 vs Jan, 2009 Release date over 3 years later
Much lower annual home energy cost 2.41 $/year vs 15.66 $/year 6.5x lower annual home energy cost
Much lower annual commercial energy cost 8.76 $/year vs 56.94 $/year 6.5x lower annual commercial energy cost

Features Key features of the Pentium E5400  vs Celeron 725C 

clock speed

Pentium E5400
2.7 GHz
Celeron 725C
1.3 GHz

L2 cache

overclocked clock speed (air)

Pentium E5400
3.75 GHz
Celeron 725C
1.4 GHz

overclocked clock speed (water)

Pentium E5400
4.49 GHz
Celeron 725C
1.4 GHz

Specifications Full list of technical specs

summary

Pentium E5400  vs
Celeron 725C 
Clock speed 2.7 GHz 1.3 GHz
Cores Dual core Single core

features

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

power consumption

TDP 65W 10W
Annual home energy cost 15.66 $/year 2.41 $/year
Annual commercial energy cost 56.94 $/year 8.76 $/year
Typical power consumption 52.81W 8.13W

details

Pentium E5400  vs
Celeron 725C 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 0.25 MB
L2 cache per core 1 MB/core 0.25 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.75 GHz 1.4 GHz
Overclocked clock speed (Water) 4.49 GHz 1.4 GHz
Overclocked clock speed (Air) 3.75 GHz 1.4 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

bus

Architecture FSB DMI
Number of links 1 1
Intel Pentium E5400
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Intel Celeron 725C
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