CPUBoss Review Our evaluation of Q6600 vs 255 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

3.7

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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More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much better performance per watt 1.19 pt/W vs 0.8 pt/W Around 50% better performance per watt
Much lower typical power consumption 85.31W vs 116.42W More than 25% lower typical power consumption
Much lower annual home energy cost 25.29 $/year vs 42.79 $/year More than 40% lower annual home energy cost
Significantly lower annual commercial energy cost 91.98 $/year vs 113.7 $/year Around 20% lower annual commercial energy cost
Front view of AMD Athlon II X2 255

Reasons to consider the
AMD Athlon II X2 255

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Much higher clock speed 3.1 GHz vs 2.4 GHz Around 30% higher clock speed
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher Maximum operating temperature 74 °C vs 62.2 °C Around 20% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.8 GHz vs 3.52 GHz Around 10% better overclocked clock speed (Air)
Newer Jan, 2010 vs Jan, 2007 Release date over 3 years later
Better overclocked clock speed (Water) 3.93 GHz vs 3.6 GHz Around 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Core2 Quad Q6600 vs Athlon II X2 255

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
Athlon II X2 255
125,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Quad Q6600  vs
Athlon II X2 255 
Clock speed 2.4 GHz 3.1 GHz
Cores Quad core Dual core
Socket type
LGA 775
AM3

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 105W 65W
Annual home energy cost 25.29 $/year 42.79 $/year
Annual commercial energy cost 91.98 $/year 113.7 $/year
Performance per watt 1.19 pt/W 0.8 pt/W
Typical power consumption 85.31W 116.42W

details

Core2 Quad Q6600  vs
Athlon II X2 255 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 8 MB 2 MB
L2 cache per core 2 MB/core 1 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Voltage range 0.85 - 1.5V 0.85 - 1.4V
Operating temperature Unknown - 62.2°C Unknown - 74°C

overclocking

Overclocked clock speed 3.52 GHz 3.8 GHz
Overclocked clock speed (Water) 3.6 GHz 3.93 GHz
Overclocked clock speed (Air) 3.52 GHz 3.8 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Clock speed 1,066 MHz 2,000 MHz
Intel Core2 Quad Q6600
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AMD Athlon II X2 255
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