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Differences What are the advantages of each

Front view of Intel Celeron 827E

Reasons to consider the
Intel Celeron 827E

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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
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
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Better PassMark (Single core) score 704 vs 284 Around 2.5x better PassMark (Single core) score
Newer Jul, 2011 vs Jun, 2010 Release date over a year later
Front view of Intel Atom D525

Reasons to consider the
Intel Atom D525

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Significantly more l2 cache 1 MB vs 0.25 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Higher clock speed 1.8 GHz vs 1.4 GHz Around 30% higher clock speed
Better overclocked clock speed (Air) 2.12 GHz vs 1.4 GHz More than 50% better overclocked clock speed (Air)
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Better overclocked clock speed (Water) 1.8 GHz vs 1.4 GHz Around 30% better overclocked clock speed (Water)

Benchmarks Real world tests of Celeron 827E vs Atom D525

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Celeron 827E  vs
Atom D525 
Clock speed 1.4 GHz 1.8 GHz
Cores Single core Dual core

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 17W 13W
Annual home energy cost 4.1 $/year 3.13 $/year
Annual commercial energy cost 14.89 $/year 11.39 $/year
Performance per watt 3.06 pt/W 2.62 pt/W
Typical power consumption 13.81W 10.56W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 2,500 MT/s

details

Celeron 827E  vs
Atom D525 
Architecture x86-64 x86-64
Threads 1 4
L2 cache 0.25 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.4 GHz 2.12 GHz
Overclocked clock speed (Water) 1.4 GHz 1.8 GHz
Overclocked clock speed (Air) 1.4 GHz 2.12 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Integrated

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
DDR2-800
DDR2-667
DDR2
Channels Dual Channel Single Channel
Supports ECC Yes No
Maximum bandwidth 21,333.32 MB/s 6,400 MB/s
Maximum memory size 16,998.4 MB 4,096 MB
Intel Celeron 827E
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Intel Atom D525
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