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Differences What are the advantages of each

Front view of Intel Pentium 4 660

Reasons to consider the
Intel Pentium 4 660

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Much higher clock speed 3.6 GHz vs 3 GHz More than 20% higher clock speed
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 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better geekbench 2 (32-bit) score 2,826 vs 1,079 More than 2.5x better geekbench 2 (32-bit) score
More cores 2 vs 1 Twice as many cores; run more applications at once
Much lower typical power consumption 52.81W vs 93.44W Around 45% lower typical power consumption
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual home energy cost 15.66 $/year vs 27.7 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 100.74 $/year Around 45% lower annual commercial energy cost
Higher Maximum operating temperature 72.4 °C vs 70.8 °C Almost the same
Better overclocked clock speed (Air) 4.22 GHz vs 4.17 GHz Almost the same
Newer Jan, 2008 vs Jan, 2005 Release date over 3 years later
Better overclocked clock speed (Water) 4.23 GHz vs 4.07 GHz Around 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Pentium 4 660 vs Core2 Duo E8400

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Cinebench R10 32-Bit

Cinebench R10 32-Bit (Single Core)

sysmark 2007 (overall)

sysmark 2007 (3d)

sysmark 2007 (video creation)

sysmark 2007 (productivity)

Specifications Full list of technical specs

summary

Pentium 4 660  vs
Core2 Duo E8400 
Clock speed 3.6 GHz 3 GHz
Cores Single core Dual core
Socket type
LGA 775

features

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

power consumption

TDP 115W 65W
Annual home energy cost 27.7 $/year 15.66 $/year
Annual commercial energy cost 100.74 $/year 56.94 $/year
Typical power consumption 93.44W 52.81W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 800 MHz 1,333 MHz

details

Pentium 4 660  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 6 MB
L2 cache per core 2 MB/core 3 MB/core
Manufacture process 90 nm 45 nm
Transistor count 169,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 18 9
Voltage range 1.2 - 1.4V 0.85 - 1.36V
Operating temperature Unknown - 70.8°C Unknown - 72.4°C

overclocking

Overclocked clock speed 4.17 GHz 4.22 GHz
Overclocked clock speed (Water) 4.07 GHz 4.23 GHz
Overclocked clock speed (Air) 4.17 GHz 4.22 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 4 660
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Intel Core2 Duo E8400
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