CPUBoss Review Our evaluation of 6820HK vs 6700K among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

8.5

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 6700K 

CPUBoss recommends the Intel Core i7 6700K  based on its performance, single-core performance and value.

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VS
Front view of Intel Core i7 6700K

Intel Core i7 6700K

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Core i7 6820HK

Reasons to consider the
Intel Core i7 6820HK

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Much lower typical power consumption 36.56W vs 73.94W 2x lower typical power consumption
Better performance per watt 5.59 pt/W vs 3.49 pt/W Around 60% better performance per watt
Much lower annual home energy cost 10.84 $/year vs 21.92 $/year 2x lower annual home energy cost
Much lower annual commercial energy cost 39.42 $/year vs 79.72 $/year 2x lower annual commercial energy cost
Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much better 3DMark06 CPU score 80.5 vs 68.7 More than 15% better 3DMark06 CPU score
Much higher clock speed 4 GHz vs 2.7 GHz Around 50% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.6 GHz More than 15% higher turbo clock speed
Better turbo clock speed 1,150 MHz vs 1,050 MHz Around 10% better turbo clock speed
Better PassMark (Single core) score 2,349 vs 1,884 Around 25% better PassMark (Single core) score
Better performance per dollar 0.91 pt/$ vs 0.67 pt/$ More than 35% better performance per dollar
Better PassMark score 11,109 vs 9,106 More than 20% better PassMark score
Better overclocked clock speed (Air) 4.61 GHz vs 4.13 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.77 GHz vs 4.18 GHz Around 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 6820HK vs 6700K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6820HK
25.56 mHash/s
Core i7 6700K
35.02 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6820HK
20.7 mPixels/s
Core i7 6700K
26.72 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6820HK
1.45 fps
Core i7 6700K
1.82 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 6820HK
4,040 MB/s
Core i7 6700K
6,010 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6820HK  vs
6700K 
Clock speed 2.7 GHz 4 GHz
Turbo clock speed 3.6 GHz 4.2 GHz
Cores Quad core Quad core
Is unlocked Yes Yes

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 45W 91W
Annual home energy cost 10.84 $/year 21.92 $/year
Annual commercial energy cost 39.42 $/year 79.72 $/year
Performance per watt 5.59 pt/W 3.49 pt/W
Typical power consumption 36.56W 73.94W

bus

Architecture FSB FSB
Number of links 1 0
Transfer rate 8,000 MT/s 8,000 MT/s

details

Core i7 6820HK  vs
6700K 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.13 GHz 4.61 GHz
Overclocked clock speed (Water) 4.18 GHz 4.77 GHz
Overclocked clock speed (Air) 4.13 GHz 4.61 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 1,050 MHz 1,150 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 6820HK
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Intel Core i7 6700K
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