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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 0.5 MB 16x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.4 GHz vs 1.3 GHz Around 85% higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Air) 3.52 GHz vs 1.3 GHz Around 2.8x better overclocked clock speed (Air)
More cores 4 vs 1 3 more cores; run more applications at once
Better PassMark score 2,970 vs 271 Around 11x better PassMark score
Much better overclocked clock speed (Water) 3.6 GHz vs 1.3 GHz More than 2.8x better overclocked clock speed (Water)
More threads 4 vs 2 Twice as many threads
Front view of Intel Atom E660

Reasons to consider the
Intel Atom E660

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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
Much lower typical power consumption 2.92W vs 85.31W 29.2x lower typical power consumption
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Newer Sep, 2010 vs Jan, 2007 Release date over 3 years later
Much lower annual home energy cost 0.87 $/year vs 25.29 $/year 29.2x lower annual home energy cost
Much lower annual commercial energy cost 3.15 $/year vs 91.98 $/year 29.2x lower annual commercial energy cost
Better performance per watt 3.07 pt/W vs 1.19 pt/W More than 2.5x better performance per watt

Benchmarks Real world tests of Core2 Quad Q6600 vs Atom E660

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Core2 Quad Q6600  vs
Atom E660 
Clock speed 2.4 GHz 1.3 GHz
Cores Quad core Single core

features

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

power consumption

TDP 105W 3.6W
Annual home energy cost 25.29 $/year 0.87 $/year
Annual commercial energy cost 91.98 $/year 3.15 $/year
Performance per watt 1.19 pt/W 3.07 pt/W
Typical power consumption 85.31W 2.92W

details

Core2 Quad Q6600  vs
Atom E660 
Architecture x86-64 x86
Threads 4 2
L2 cache 8 MB 0.5 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Clock multiplier 9 13
Voltage range 0.85 - 1.5V 0.75 - 0.9V

overclocking

Overclocked clock speed 3.52 GHz 1.3 GHz
Overclocked clock speed (Water) 3.6 GHz 1.3 GHz
Overclocked clock speed (Air) 3.52 GHz 1.3 GHz

integrated graphics

GPU None GPU
Label N/A Integrated
GPU clock speed N/A 400 MHz

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 2,500 MHz
Intel Core2 Quad Q6600
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Intel Atom E660
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