CPUBoss Review Our evaluation of 820QM vs 3420M among laptop CPUs (over 15W)

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

3.7

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 820QM 

CPUBoss recommends the Intel Core i7 820QM  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i7 820QM

Reasons to consider the
Intel Core i7 820QM

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CPUBoss is not aware of any important advantages of the Intel Core i7 820QM vs the AMD A6 3420M.

Front view of AMD A6 3420M

Reasons to consider the
AMD A6 3420M

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Core i7 820QM vs A6 3420M

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 3420M
3,126

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 820QM
120,500 MB/s
A6 3420M
76,600 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

A6 3420M
3,025

GeekBench (64-bit) Data courtesy Primate Labs

A6 3420M
3,333

GeekBench

A6 3420M
4,603

PassMark Data courtesy Passmark

A6 3420M
2,020

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 820QM  vs
A6 3420M 
Clock speed 1.73 GHz 1.5 GHz
Turbo clock speed 3.06 GHz 2.4 GHz
Cores Quad core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
AMD64
SSE4.1
SSE4.2
AMD-V
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 35W
Annual home energy cost 10.84 $/year 8.43 $/year
Performance per watt 3.15 pt/W 3.12 pt/W
Typical power consumption 36.56W 28.44W

details

Core i7 820QM  vs
A6 3420M 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 4 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 1 MB
L3 cache per core 2 MB/core 0.25 MB/core
Manufacture process 45 nm 32 nm
Transistor count 774,000,000 1,450,000,000
Max CPUs 1 1
Clock multiplier 13 12

overclocking

Overclocked clock speed 2.71 GHz 2.62 GHz
Overclocked clock speed (Water) 1.73 GHz 1.5 GHz
Overclocked clock speed (Air) 2.71 GHz 2.62 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 6520G
Latest DirectX N/A 11.0
GPU clock speed N/A 400 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Intel Core i7 820QM
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AMD A6 3420M
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