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Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much higher clock speed 4 GHz vs 0.6 GHz Around 6.8x higher clock speed
Much newer manufacturing process 14 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
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) 4.61 GHz vs 0.6 GHz Around 7.8x better overclocked clock speed (Air)
More cores 4 vs 1 3 more cores; run more applications at once
More threads 8 vs 2 6 more threads
Newer Jul, 2015 vs Sep, 2010 Release date over 4 years later
Much better overclocked clock speed (Water) 4.77 GHz vs 0.6 GHz Around 8x better overclocked clock speed (Water)
Front view of Intel Atom E620T

Reasons to consider the
Intel Atom E620T

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Much lower typical power consumption 2.68W vs 73.94W 27.6x lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 0.79 $/year vs 21.92 $/year 27.6x lower annual home energy cost
Much lower annual commercial energy cost 2.89 $/year vs 79.72 $/year 27.6x lower annual commercial energy cost

Features Key features of the Core i7 6700K  vs Atom E620T 

clock speed

Atom E620T
0.6 GHz

L2 cache

gpu clock speed

Core i7 6700K
350 MHz
Atom E620T
320 MHz

overclocked clock speed (air)

Core i7 6700K
4.61 GHz
Atom E620T
0.6 GHz

overclocked clock speed (water)

Core i7 6700K
4.77 GHz
Atom E620T
0.6 GHz

TDP

Specifications Full list of technical specs

summary

Core i7 6700K  vs
Atom E620T 
Clock speed 4 GHz 0.6 GHz
Cores Quad 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
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 91W 3.3W
Annual home energy cost 21.92 $/year 0.79 $/year
Annual commercial energy cost 79.72 $/year 2.89 $/year
Typical power consumption 73.94W 2.68W

bus

Architecture FSB FSB
Number of links 0 1

details

Core i7 6700K  vs
Atom E620T 
Architecture x86-64 x86
Threads 8 2
L2 cache 1 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 4.61 GHz 0.6 GHz
Overclocked clock speed (Water) 4.77 GHz 0.6 GHz
Overclocked clock speed (Air) 4.61 GHz 0.6 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Integrated
GPU clock speed 350 MHz 320 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR2-800
DDR2
Channels Dual Channel Single Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 6,400 MB/s
Maximum memory size 65,536 MB 2,048 MB
Intel Core i7 6700K
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Intel Atom E620T
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