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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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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 302 More than 2.2x better PassMark (Single core) score
Front view of Intel Atom D2550

Reasons to consider the
Intel Atom D2550

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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 1.86 GHz vs 1.4 GHz Around 35% higher clock speed
Much higher GPU clock speed 640 MHz vs 350 MHz Around 85% higher GPU clock speed
Better performance per dollar 0.76 pt/$ vs 0.53 pt/$ Around 45% better performance per dollar
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
Lower typical power consumption 8.13W vs 13.81W More than 40% lower typical power consumption
Better overclocked clock speed (Air) 1.87 GHz vs 1.4 GHz Around 35% better overclocked clock speed (Air)
More cores 2 vs 1 Twice as many cores; run more applications at once
Newer Mar, 2012 vs Jul, 2011 Release date 8 months later
Better overclocked clock speed (Water) 1.87 GHz vs 1.4 GHz Around 35% better overclocked clock speed (Water)
Lower annual home energy cost 2.41 $/year vs 4.1 $/year More than 40% lower annual home energy cost
Lower annual commercial energy cost 8.76 $/year vs 14.89 $/year More than 40% lower annual commercial energy cost

Benchmarks Real world tests of Celeron 827E vs Atom D2550

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Celeron 827E  vs
Atom D2550 
Clock speed 1.4 GHz 1.86 GHz
Cores Single core Dual core

features

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

power consumption

TDP 17W 10W
Annual home energy cost 4.1 $/year 2.41 $/year
Annual commercial energy cost 14.89 $/year 8.76 $/year
Performance per watt 3.06 pt/W 3.59 pt/W
Typical power consumption 13.81W 8.13W

bus

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

details

Celeron 827E  vs
Atom D2550 
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 32 nm
Max CPUs 1 1
Operating temperature Unknown - 100°C Unknown - 100°C

overclocking

Overclocked clock speed 1.4 GHz 1.87 GHz
Overclocked clock speed (Water) 1.4 GHz 1.87 GHz
Overclocked clock speed (Air) 1.4 GHz 1.87 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Integrated
Number of displays supported 2 2
GPU clock speed 350 MHz 640 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Dual Channel Single Channel
Supports ECC Yes No
Maximum bandwidth 21,333.32 MB/s 8,533.33 MB/s
Maximum memory size 16,998.4 MB 4,096 MB
Intel Celeron 827E
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Intel Atom D2550
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