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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 more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 3.2 GHz vs 2.4 GHz Around 35% higher clock speed
More threads 2 vs 1 Twice as many threads
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) 3.92 GHz vs 3.57 GHz Around 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.2 GHz vs 2.4 GHz Around 35% better overclocked clock speed (Water)
Front view of Intel Celeron 460

Reasons to consider the
Intel Celeron 460

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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
Much lower annual commercial energy cost 30.66 $/year vs 73.58 $/year 2.4x lower annual commercial energy cost
Much lower annual home energy cost 8.43 $/year vs 20.24 $/year 2.4x lower annual home energy cost

Features Key features of the Pentium 4 640  vs Celeron 460 

clock speed

Pentium 4 640
3.2 GHz
Celeron 460
2.4 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 640
3.92 GHz
Celeron 460
3.57 GHz

overclocked clock speed (water)

Pentium 4 640
3.2 GHz
Celeron 460
2.4 GHz

Specifications Full list of technical specs

summary

Pentium 4 640  vs
Celeron 460 
Clock speed 3.2 GHz 2.4 GHz
Cores Single core Single core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Instruction set extensions
MMX
SSE
SSE2
SSE3

bus

Clock speed 800 MHz 800 MHz

details

Pentium 4 640  vs
Celeron 460 
Threads 2 1
L2 cache 2 MB 0.5 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 90 nm 65 nm

overclocking

Overclocked clock speed 3.92 GHz 3.57 GHz
Overclocked clock speed (Water) 3.2 GHz 2.4 GHz
PassMark (Overclocked) 844.2 1,224.2
Overclocked clock speed (Air) 3.92 GHz 3.57 GHz

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
Intel Pentium 4 640
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Intel Celeron 460
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