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Differences What are the advantages of each

Front view of Intel Core i5 5200U

Reasons to consider the
Intel Core i5 5200U

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Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 2.2 GHz vs 1.3 GHz Around 70% 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
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Significantly better overclocked clock speed (Air) 2.61 GHz vs 1.3 GHz More than 2x better overclocked clock speed (Air)
Newer Jan, 2015 vs Nov, 2010 Release date over 4 years later
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) 2.2 GHz vs 1.3 GHz Around 70% better overclocked clock speed (Water)
Front view of Intel Atom E665C

Reasons to consider the
Intel Atom E665C

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Higher GPU clock speed 400 MHz vs 300 MHz Around 35% higher GPU clock speed
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Lower typical power consumption 5.69W vs 12.19W 2.1x lower typical power consumption
Lower annual home energy cost 1.69 $/year vs 3.61 $/year 2.1x lower annual home energy cost
Lower annual commercial energy cost 6.13 $/year vs 13.14 $/year 2.1x lower annual commercial energy cost

Features Key features of the Core i5 5200U  vs Atom E665C 

clock speed

Core i5 5200U
2.2 GHz
Atom E665C
1.3 GHz

L2 cache

Core i5 5200U
0.5 MB
Atom E665C
0.5 MB

gpu clock speed

Core i5 5200U
300 MHz
Atom E665C
400 MHz

overclocked clock speed (air)

Core i5 5200U
2.61 GHz
Atom E665C
1.3 GHz

overclocked clock speed (water)

Core i5 5200U
2.2 GHz
Atom E665C
1.3 GHz

Specifications Full list of technical specs

summary

Core i5 5200U  vs
Atom E665C 
Clock speed 2.2 GHz 1.3 GHz
Cores Dual core Single core

features

Has a NX bit Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 15W 7W
Annual home energy cost 3.61 $/year 1.69 $/year
Annual commercial energy cost 13.14 $/year 6.13 $/year
Typical power consumption 12.19W 5.69W

bus

Architecture DMI 2.0 FSB
Number of links 1 1
Transfer rate 5,000 MT/s 2,500 MT/s

details

Core i5 5200U  vs
Atom E665C 
Architecture x86-64 x86
Threads 4 2
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 14 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.61 GHz 1.3 GHz
Overclocked clock speed (Water) 2.2 GHz 1.3 GHz
Overclocked clock speed (Air) 2.61 GHz 1.3 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 5500 Integrated
GPU clock speed 300 MHz 400 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3
DDR2-800
DDR2
Channels Dual Channel Single Channel
Maximum bandwidth 25,600 MB/s 6,400 MB/s
Maximum memory size 16,384 MB 3,000.32 MB
Intel Core i5 5200U
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Intel Atom E665C
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