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Differences What are the advantages of each

Front view of Intel Celeron N2808

Reasons to consider the
Intel Celeron N2808

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
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
Significantly better performance per watt 10.39 pt/W vs 6.48 pt/W More than 60% better performance per watt
Newer Jul, 2014 vs Apr, 2009 Release date over 5 years later
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of Intel Atom Z550

Reasons to consider the
Intel Atom Z550

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Higher clock speed 2 GHz vs 1.58 GHz More than 25% higher clock speed
Better overclocked clock speed (Air) 2.16 GHz vs 1.58 GHz More than 35% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2 GHz vs 1.58 GHz More than 25% better overclocked clock speed (Water)

Benchmarks Real world tests of Celeron N2808 vs Atom Z550

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Celeron N2808  vs
Atom Z550 
Clock speed 1.58 GHz 2 GHz
Cores Dual core Single core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
EM64T
SSE
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 4.5W 2.4W
Annual home energy cost 1.08 $/year 0.58 $/year
Annual commercial energy cost 3.94 $/year 2.1 $/year
Performance per watt 10.39 pt/W 6.48 pt/W
Typical power consumption 3.66W 1.95W

details

Celeron N2808  vs
Atom Z550 
Architecture x86-64 x86
Threads 2 2
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 22 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.58 GHz 2.16 GHz
Overclocked clock speed (Water) 1.58 GHz 2 GHz
Overclocked clock speed (Air) 1.58 GHz 2.16 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
Number of displays supported 2 N/A
GPU clock speed 311 MHz N/A
Turbo clock speed 792 MHz N/A

bus

Architecture FSB FSB
Number of links 1 1
Intel Celeron N2808
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Intel Atom Z550
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