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Differences What are the advantages of each

Front view of Intel Pentium D 940

Reasons to consider the
Intel Pentium D 940

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Much higher clock speed 3.2 GHz vs 2.4 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 4.25 GHz vs 3.49 GHz More than 20% better overclocked clock speed (Air)
Much higher Maximum operating temperature 68.6 °C vs 60.1 °C Around 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.6 GHz vs 3.45 GHz Around 35% better overclocked clock speed (Water)
Front view of Intel Core2 Duo E6600

Reasons to consider the
Intel Core2 Duo E6600

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Much better PassMark score 1,884 vs 710 Around 2.8x better PassMark score
Much better PassMark (Single core) score 1,257 vs 758 More than 65% better PassMark (Single core) score
Much better performance per watt 1.7 pt/W vs 0.44 pt/W More than 3.8x better performance per watt
Much lower typical power consumption 52.81W vs 105.63W 2x lower typical power consumption
Much lower annual commercial energy cost 56.94 $/year vs 113.88 $/year 2x lower annual commercial energy cost
Much lower annual home energy cost 15.66 $/year vs 31.32 $/year 2x lower annual home energy cost

Benchmarks Real world tests of Pentium D 940 vs Core2 Duo E6600

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium D 940  vs
Core2 Duo E6600 
Clock speed 3.2 GHz 2.4 GHz
Cores Dual core Dual core
Socket type
LGA 775

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 130W 65W
Annual home energy cost 31.32 $/year 15.66 $/year
Annual commercial energy cost 113.88 $/year 56.94 $/year
Performance per watt 0.44 pt/W 1.7 pt/W
Typical power consumption 105.63W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 1,066 MHz

details

Pentium D 940  vs
Core2 Duo E6600 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 4 MB 4 MB
L2 cache per core 2 MB/core 2 MB/core
Manufacture process 65 nm 65 nm
Transistor count 376,000,000 291,000,000
Max CPUs 1 1
Clock multiplier 16 9
Voltage range 1.2 - 1.34V 0.85 - 1.5V
Operating temperature Unknown - 68.6°C Unknown - 60.1°C

overclocking

Overclocked clock speed 4.25 GHz 3.49 GHz
Overclocked clock speed (Water) 4.6 GHz 3.45 GHz
Overclocked clock speed (Air) 4.25 GHz 3.49 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
Intel Pentium D 940
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Intel Core2 Duo E6600
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