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Differences What are the advantages of each

Front view of Intel Pentium E5500

Reasons to consider the
Intel Pentium E5500

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Much higher clock speed 2.8 GHz vs 0.6 GHz Around 4.8x higher clock speed
Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Much better overclocked clock speed (Air) 3.91 GHz vs 0.6 GHz More than 6.5x better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 4.14 GHz vs 0.6 GHz Around 7x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
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
Much lower typical power consumption 2.68W vs 52.81W 19.7x lower typical power consumption
Much lower annual home energy cost 0.79 $/year vs 15.66 $/year 19.7x lower annual home energy cost
Much lower annual commercial energy cost 2.89 $/year vs 56.94 $/year 19.7x lower annual commercial energy cost
Newer Sep, 2010 vs Apr, 2010 Release date 5 months later

Features Key features of the Pentium E5500  vs Atom E620 

clock speed

Pentium E5500
2.8 GHz
Atom E620
0.6 GHz

L2 cache

Atom E620
0.5 MB

overclocked clock speed (air)

Pentium E5500
3.91 GHz
Atom E620
0.6 GHz

overclocked clock speed (water)

Pentium E5500
4.14 GHz
Atom E620
0.6 GHz

TDP

Specifications Full list of technical specs

summary

Pentium E5500  vs
Atom E620 
Clock speed 2.8 GHz 0.6 GHz
Cores Dual core Single core

features

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

power consumption

TDP 65W 3.3W
Annual home energy cost 15.66 $/year 0.79 $/year
Annual commercial energy cost 56.94 $/year 2.89 $/year
Typical power consumption 52.81W 2.68W

details

Pentium E5500  vs
Atom E620 
Architecture x86-64 x86
Threads 2 2
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Clock multiplier 14 6
Voltage range 0.85 - 1.36V 0.75 - 0.9V

overclocking

Overclocked clock speed 3.91 GHz 0.6 GHz
Overclocked clock speed (Water) 4.14 GHz 0.6 GHz
Overclocked clock speed (Air) 3.91 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 800 MHz 2,500 MHz
Intel Pentium E5500
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Intel Atom E620
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