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Differences What are the advantages of each

Front view of Intel Atom Z510

Reasons to consider the
Intel Atom Z510

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Higher clock speed 1.1 GHz vs 0.6 GHz Around 85% higher clock speed
Better overclocked clock speed (Air) 1.1 GHz vs 0.6 GHz Around 85% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 1.1 GHz vs 0.6 GHz Around 85% better overclocked clock speed (Water)
Front view of Intel Atom E620

Reasons to consider the
Intel Atom E620

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Newer Sep, 2010 vs Apr, 2008 Release date over 2 years later

Features Key features of the Atom Z510  vs E620 

clock speed

Atom Z510
1.1 GHz
Atom E620
0.6 GHz

L2 cache

Atom Z510
0.5 MB
Atom E620
0.5 MB

overclocked clock speed (air)

Atom Z510
1.1 GHz
Atom E620
0.6 GHz

overclocked clock speed (water)

Atom Z510
1.1 GHz
Atom E620
0.6 GHz

TDP

Specifications Full list of technical specs

summary

Atom Z510  vs
E620 
Clock speed 1.1 GHz 0.6 GHz
Cores Single core Single core

features

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

power consumption

TDP 2W 3.3W
Annual home energy cost 0.48 $/year 0.79 $/year
Annual commercial energy cost 1.75 $/year 2.89 $/year
Typical power consumption 1.63W 2.68W

details

Atom Z510  vs
E620 
Architecture x86 x86
Threads 1 2
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Clock multiplier 11 6
Voltage range 0.75 - 1.1V 0.75 - 0.9V

overclocking

Overclocked clock speed 1.1 GHz 0.6 GHz
Overclocked clock speed (Water) 1.1 GHz 0.6 GHz
Overclocked clock speed (Air) 1.1 GHz 0.6 GHz

integrated graphics

GPU None GPU
Label N/A Integrated
GPU clock speed N/A 320 MHz

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 400 MHz 2,500 MHz
Intel Atom Z510
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Intel Atom E620
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