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Differences What are the advantages of each

Front view of Intel Core i7 6820HQ

Reasons to consider the
Intel Core i7 6820HQ

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Front view of Intel Core i7 6820HK

Reasons to consider the
Intel Core i7 6820HK

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better CompuBench 1.5 T-Rex score 1.45 fps vs -1 fps Around 250% better CompuBench 1.5 T-Rex score
Much better 3DMark06 CPU score 68.7 vs 67.6 Almost the same
Much better geekbench 3 Multi-Core score 13,274 vs 8,200 More than 60% better geekbench 3 Multi-Core score
Better overclocked clock speed (Air) 4.13 GHz vs 3.54 GHz More than 15% better overclocked clock speed (Air)
Better performance per dollar 0.67 pt/$ vs 0.53 pt/$ More than 25% better performance per dollar
Better performance per watt 5.59 pt/W vs 4.46 pt/W More than 25% better performance per watt
Much better overclocked clock speed (Water) 4.18 GHz vs 2.7 GHz Around 55% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 6820HQ vs 6820HK

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6820HQ
30.97 mHash/s
Core i7 6820HK
25.56 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6820HQ
25.95 mPixels/s
Core i7 6820HK
20.7 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6820HK
1.45 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 6820HQ
4,205 MB/s
Core i7 6820HK
4,040 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6820HQ  vs
6820HK 
Clock speed 2.7 GHz 2.7 GHz
Turbo clock speed 3.6 GHz 3.6 GHz
Cores Quad core Quad core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing 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 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 4.46 pt/W 5.59 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 6820HQ  vs
6820HK 
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 3.54 GHz 4.13 GHz
Overclocked clock speed (Water) 2.7 GHz 4.18 GHz
Overclocked clock speed (Air) 3.54 GHz 4.13 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 1,050 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 6820HQ
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Intel Core i7 6820HK
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