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Differences What are the advantages of each

Front view of Intel Atom E620T

Reasons to consider the
Intel Atom E620T

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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
Lower typical power consumption 2.68W vs 10.56W 3.9x lower typical power consumption
Lower annual commercial energy cost 2.89 $/year vs 11.39 $/year 3.9x lower annual commercial energy cost
Lower annual home energy cost 0.79 $/year vs 3.13 $/year 3.9x lower annual home energy cost
Newer Sep, 2010 vs Jun, 2010 Release date 2 months later
Front view of Intel Atom D525

Reasons to consider the
Intel Atom D525

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Significantly higher clock speed 1.8 GHz vs 0.6 GHz More than 3x higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 2.12 GHz vs 0.6 GHz More than 3.5x better overclocked clock speed (Air)
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Significantly better overclocked clock speed (Water) 1.8 GHz vs 0.6 GHz More than 3x better overclocked clock speed (Water)

Features Key features of the Atom E620T  vs D525 

clock speed

Atom E620T
0.6 GHz
Atom D525
1.8 GHz

L2 cache

Atom E620T
0.5 MB
Atom D525
1 MB

overclocked clock speed (air)

Atom E620T
0.6 GHz
Atom D525
2.12 GHz

overclocked clock speed (water)

Atom E620T
0.6 GHz
Atom D525
1.8 GHz

TDP

Specifications Full list of technical specs

summary

Atom E620T  vs
D525 
Clock speed 0.6 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 3.3W 13W
Annual home energy cost 0.79 $/year 3.13 $/year
Annual commercial energy cost 2.89 $/year 11.39 $/year
Typical power consumption 2.68W 10.56W

bus

Architecture FSB DMI
Number of links 1 1

details

Atom E620T  vs
D525 
Architecture x86 x86-64
Threads 2 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.75 - 0.9V 0.8 - 1.18V

overclocking

Overclocked clock speed 0.6 GHz 2.12 GHz
Overclocked clock speed (Water) 0.6 GHz 1.8 GHz
Overclocked clock speed (Air) 0.6 GHz 2.12 GHz

integrated graphics

GPU GPU GPU
Label Integrated Integrated

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR3-800
DDR2-800
DDR2-667
DDR2
Channels Single Channel Single Channel
Supports ECC No No
Maximum bandwidth 6,400 MB/s 6,400 MB/s
Maximum memory size 2,048 MB 4,096 MB
Intel Atom E620T
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Intel Atom D525
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