CPUBoss Review Our evaluation of 6820HQ vs 4870HQ 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

9

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 4870HQ 

CPUBoss recommends the Intel Core i7 4870HQ  based on its single-core performance and value.

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VS
Front view of Intel Core i7 4870HQ

Intel Core i7 4870HQ

CPUBoss Winner

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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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Slightly higher clock speed 2.7 GHz vs 2.5 GHz Around 10% higher clock speed
Significantly higher GPU clock speed 350 MHz vs 200 MHz 75% higher GPU clock speed
Better CompuBench 1.5 face detection score 25.7 mPixels/s vs 18.08 mPixels/s More than 40% better CompuBench 1.5 face detection score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Newer Jul, 2015 vs Jul, 2014 Release date a year later
Front view of Intel Core i7 4870HQ

Reasons to consider the
Intel Core i7 4870HQ

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Much better performance per watt 24.61 pt/W vs 4.51 pt/W Around 5.5x better performance per watt
Much better performance per dollar 2.66 pt/$ vs 0.54 pt/$ Around 5x better performance per dollar
Significantly better turbo clock speed 1,200 MHz vs 1,050 MHz Around 15% better turbo clock speed
Slightly better geekbench 3 Multi-Core score 12,605 vs 8,200 Around 55% better geekbench 3 Multi-Core score

Benchmarks Real world tests of Core i7 6820HQ vs 4870HQ

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6820HQ
30.98 mHash/s
Core i7 4870HQ
30.62 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6820HQ
25.7 mPixels/s
Core i7 4870HQ
18.08 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 4870HQ
1.98 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 4870HQ
4,400,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6820HQ  vs
4870HQ 
Clock speed 2.7 GHz 2.5 GHz
Turbo clock speed 3.6 GHz 3.7 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 47W
Annual home energy cost 10.84 $/year 11.32 $/year
Annual commercial energy cost 39.42 $/year 41.17 $/year
Performance per watt 4.51 pt/W 24.61 pt/W
Typical power consumption 36.56W 38.19W

bus

Architecture FSB DMI 2.0
Number of links 1 1
Transfer rate 8,000 MT/s 5,000 MT/s

details

Core i7 6820HQ  vs
4870HQ 
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 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.39 GHz 3.69 GHz
Overclocked clock speed (Water) 2.7 GHz 2.5 GHz
Overclocked clock speed (Air) 3.39 GHz 3.69 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® Iris™ Pro Graphics 5200
Number of displays supported 3 3
GPU clock speed 350 MHz 200 MHz
Turbo clock speed 1,050 MHz 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 65,536 MB 32,768 MB
Intel Core i7 6820HQ
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Intel Core i7 4870HQ
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