CPUBoss Review Our evaluation of Q6600 vs 6400K among desktop 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

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

6.1

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Quad Q6600 

CPUBoss recommends the Intel Core2 Quad Q6600  based on its .

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Differences What are the advantages of each

Front view of Intel Core2 Quad Q6600

Reasons to consider the
Intel Core2 Quad Q6600

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Front view of AMD A6 6400K

Reasons to consider the
AMD A6 6400K

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Much higher clock speed 3.9 GHz vs 2.4 GHz Around 65% higher clock speed
Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 4.76 GHz vs 3.52 GHz More than 35% better overclocked clock speed (Air)
Much lower typical power consumption 52.81W vs 85.31W Around 40% lower typical power consumption
Much higher Maximum operating temperature 70 °C vs 62.2 °C Around 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 5.16 GHz vs 3.6 GHz Around 45% better overclocked clock speed (Water)
Newer Jun, 2013 vs Jan, 2007 Release date over 6 years later
Much lower annual commercial energy cost 56.94 $/year vs 91.98 $/year Around 40% lower annual commercial energy cost
Much lower annual home energy cost 15.66 $/year vs 25.29 $/year Around 40% lower annual home energy cost

Benchmarks Real world tests of Core2 Quad Q6600 vs A6 6400K

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

Core2 Quad Q6600
102,800 MB/s
A6 6400K
2,380,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Quad Q6600  vs
A6 6400K 
Clock speed 2.4 GHz 3.9 GHz
Cores Quad core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
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

power consumption

TDP 105W 65W
Annual home energy cost 25.29 $/year 15.66 $/year
Annual commercial energy cost 91.98 $/year 56.94 $/year
Performance per watt 1.19 pt/W 7.25 pt/W
Typical power consumption 85.31W 52.81W

details

Core2 Quad Q6600  vs
A6 6400K 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 8 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 62.2°C Unknown - 70°C

overclocking

Overclocked clock speed 3.52 GHz 4.76 GHz
Overclocked clock speed (Water) 3.6 GHz 5.16 GHz
Overclocked clock speed (Air) 3.52 GHz 4.76 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 8470D
Latest DirectX N/A 11.0
GPU clock speed N/A 800 MHz
Intel Core2 Quad Q6600
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AMD A6 6400K
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