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Differences What are the advantages of each

Front view of Intel Pentium 4 640

Reasons to consider the
Intel Pentium 4 640

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Much higher clock speed 3.2 GHz vs 1.8 GHz Around 80% higher clock speed
Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much more l2 cache per core 2 MB/core vs 1 MB/core 2x more l2 cache per core
Better overclocked clock speed (Air) 3.92 GHz vs 3.43 GHz Around 15% better overclocked clock speed (Air)
Higher Maximum operating temperature 66.6 °C vs 60.4 °C More than 10% higher Maximum operating temperature
Front view of Intel Celeron M 430

Reasons to consider the
Intel Celeron M 430

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Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 28.44W vs 68.25W 2.4x lower typical power consumption
Newer Apr, 2007 vs Jan, 2005 Release date over 2 years later
Much lower annual home energy cost 8.43 $/year vs 20.24 $/year 2.4x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 73.58 $/year 2.4x lower annual commercial energy cost
Better overclocked clock speed (Water) 3.67 GHz vs 3.2 GHz Around 15% better overclocked clock speed (Water)

Features Key features of the Pentium 4 640  vs Celeron M 430 

clock speed

Pentium 4 640
3.2 GHz
Celeron M 430
1.8 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 640
3.92 GHz
Celeron M 430
3.43 GHz

overclocked clock speed (water)

Pentium 4 640
3.2 GHz
Celeron M 430
3.67 GHz

Specifications Full list of technical specs

summary

Pentium 4 640  vs
Celeron M 430 
Clock speed 3.2 GHz 1.8 GHz
Cores Single core Single core
Socket type
LGA 775
478

features

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

power consumption

TDP 84W 35W
Annual home energy cost 20.24 $/year 8.43 $/year
Annual commercial energy cost 73.58 $/year 30.66 $/year
Typical power consumption 68.25W 28.44W

bus

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

details

Pentium 4 640  vs
Celeron M 430 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 2 MB 1 MB
L2 cache per core 2 MB/core 1 MB/core
Manufacture process 90 nm 65 nm
Transistor count 169,000,000 105,000,000
Max CPUs 1 1
Clock multiplier 16 9
Voltage range 1.2 - 1.4V 1 - 1.34V
Operating temperature Unknown - 66.6°C Unknown - 60.4°C

overclocking

Overclocked clock speed 3.92 GHz 3.43 GHz
Overclocked clock speed (Water) 3.2 GHz 3.67 GHz
PassMark (Overclocked) 844.2 1,406.9
Overclocked clock speed (Air) 3.92 GHz 3.43 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 4 640
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Intel Celeron M 430
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