CPUBoss Review Our evaluation of G3240 vs 6400K among desktop CPUs (45 to 75W)

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

Fire Strike

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?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

7.3

CPUBoss Score

Combination of all six facets

Winner
AMD A6 6400K 

CPUBoss recommends the AMD A6 6400K  based on its overclocking.

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VS

Differences What are the advantages of each

Front view of Intel Pentium G3240

Reasons to consider the
Intel Pentium G3240

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Much more l3 cache 3 MB vs None Compared to all cpus, 3 MB l3 cache is just OK
Much newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 43.06W vs 52.81W Around 20% lower typical power consumption
Higher Maximum operating temperature 72 °C vs 70 °C Around 5% higher Maximum operating temperature
Lower annual commercial energy cost 46.43 $/year vs 56.94 $/year Around 20% lower annual commercial energy cost
Lower annual home energy cost 12.77 $/year vs 15.66 $/year Around 20% lower annual home energy cost
Newer Feb, 2014 vs Jun, 2013 Release date 8 months later
Front view of AMD A6 6400K

Reasons to consider the
AMD A6 6400K

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Much more l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher clock speed 3.9 GHz vs 3.1 GHz More than 25% higher clock speed
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Benchmarks Real world tests of Pentium G3240 vs A6 6400K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Pentium G3240
6.81 mHash/s
A6 6400K
34.13 mHash/s

CompuBench 1.5 (Face detection)

Pentium G3240
7.9 mPixels/s
A6 6400K
3.83 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Pentium G3240
0.64 fps
A6 6400K
0.4 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 6400K
3,328

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 6400K
2,108

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium G3240
177,300 MB/s
A6 6400K
2,380,000 MB/s

PassMark Data courtesy Passmark

A6 6400K
2,291

PassMark (Single Core)

A6 6400K
1,404

Specifications Full list of technical specs

summary

Pentium G3240  vs
A6 6400K 
Clock speed 3.1 GHz 3.9 GHz
Cores Dual core Dual core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1333

details

Pentium G3240  vs
A6 6400K 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB None
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 72°C Unknown - 70°C

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Radeon™ HD 8470D
GPU clock speed 350 MHz 800 MHz

power consumption

TDP 53W 65W
Annual home energy cost 12.77 $/year 15.66 $/year
Annual commercial energy cost 46.43 $/year 56.94 $/year
Performance per watt 3.12 pt/W 7.25 pt/W
Typical power consumption 43.06W 52.81W
Intel Pentium G3240
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AMD A6 6400K
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