CPUBoss Review Our evaluation of Q6600 vs E8400 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

5.3

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its single-core performance, overclocking and value.

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VS

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 l2 cache 8 MB vs 6 MB Around 35% more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 4 vs 2 Twice as many threads
Much better cinebench r10 32Bit score 9,681 vs 7,187 Around 35% better cinebench r10 32Bit score
More cores 4 vs 2 Twice as many cores; run more applications at once
Better PassMark score 2,993 vs 2,172 Around 40% better PassMark score
Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3 GHz vs 2.4 GHz More than 25% higher clock speed
Much better cinebench r10 32Bit 1-core score 3,647 vs 2,778 More than 30% better cinebench r10 32Bit 1-core score
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much higher Maximum operating temperature 72.4 °C vs 62.2 °C More than 15% higher Maximum operating temperature
Significantly lower typical power consumption 52.81W vs 85.31W Around 40% lower typical power consumption
Better geekbench 3 single core score 1,625 vs 1,306 Around 25% better geekbench 3 single core score
Better overclocked clock speed (Air) 4.23 GHz vs 3.52 GHz More than 20% better overclocked clock speed (Air)
Newer Jan, 2008 vs Jan, 2007 Release date a year later
Better performance per dollar 1.74 pt/$ vs 0.91 pt/$ More than 90% better performance per dollar
Significantly lower annual commercial energy cost 56.94 $/year vs 91.98 $/year Around 40% lower annual commercial energy cost
Significantly lower annual home energy cost 15.66 $/year vs 25.29 $/year Around 40% lower annual home energy cost
Better overclocked clock speed (Water) 4.2 GHz vs 3.74 GHz More than 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Core2 Quad Q6600 vs Duo E8400

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
Core2 Duo E8400
128,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Reviews Word on the street

Core2 Quad Q6600  vs Duo E8400 

9.4
9.1
Unfortunately because it is old and there have been many new releases, 1366 1156, 1155 and now 2011, it is quite hard to recommend it, however if you do own one already I would always say don't get rid of it, keep it as a backup rig, this was truly one of those chips that could take a lot.
Core2 Quad Q6600

Specifications Full list of technical specs

summary

Core2 Quad Q6600  vs
Duo E8400 
Clock speed 2.4 GHz 3 GHz
Cores Quad core Dual core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

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

details

Core2 Quad Q6600  vs
Duo E8400 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 8 MB 6 MB
L2 cache per core 2 MB/core 3 MB/core
Manufacture process 65 nm 45 nm
Transistor count 582,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 9 9
Voltage range 0.85 - 1.5V 0.85 - 1.36V
Operating temperature Unknown - 62.2°C Unknown - 72.4°C

overclocking

Overclock popularity 278 125
Overclock review score 5 4.5
Overclocked clock speed 3.52 GHz 4.23 GHz
Overclocked clock speed (Water) 3.74 GHz 4.2 GHz
Overclocked clock speed (Air) 3.52 GHz 4.23 GHz

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 1.39 pt/W 2.11 pt/W
Typical power consumption 85.31W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,333 MHz
Intel Core2 Quad Q6600
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Intel Core2 Duo E8400
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Comments

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Yah I agree with cpu boss
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