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Differences What are the advantages of each

Front view of Intel Core i7 6820EQ

Reasons to consider the
Intel Core i7 6820EQ

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Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Better PassMark score 8,824 vs 5,778 Around 55% better PassMark score
More threads 8 vs 4 Twice as many threads
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better performance per watt 6.37 pt/W vs 4.79 pt/W Around 35% better performance per watt
Front view of Intel Core i5 6440EQ

Reasons to consider the
Intel Core i5 6440EQ

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Better overclocked clock speed (Air) 3.4 GHz vs 2.8 GHz More than 20% better overclocked clock speed (Air)
Better performance per dollar 0.86 pt/$ vs 0.76 pt/$ Around 15% better performance per dollar
Better overclocked clock speed (Water) 3.4 GHz vs 2.8 GHz More than 20% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 6820EQ vs i5 6440EQ

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6820EQ  vs
i5 6440EQ 
Clock speed 2.8 GHz 2.7 GHz
Turbo clock speed 3.5 GHz 3.4 GHz
Cores Quad core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
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 45W 45W
Annual home energy cost 10.84 $/year 10.84 $/year
Annual commercial energy cost 39.42 $/year 39.42 $/year
Performance per watt 6.37 pt/W 4.79 pt/W
Typical power consumption 36.56W 36.56W

bus

Architecture FSB FSB
Number of links 1 1
Transfer rate 8,000 MT/s 8,000 MT/s

details

Core i7 6820EQ  vs
i5 6440EQ 
Architecture x86-64 x86-64
Threads 8 4
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.8 GHz 3.4 GHz
Overclocked clock speed (Water) 2.8 GHz 3.4 GHz
Overclocked clock speed (Air) 2.8 GHz 3.4 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® HD Graphics 530
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,000 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Core i7 6820EQ
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Intel Core i5 6440EQ
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