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Differences What are the advantages of each

Front view of Intel Pentium 4 641

Reasons to consider the
Intel Pentium 4 641

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Much higher clock speed 3.2 GHz vs 1.06 GHz More than 3x 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
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) 4.53 GHz vs 1.07 GHz Around 4.2x better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.64 GHz vs 1.07 GHz More than 4.2x better overclocked clock speed (Water)
Front view of Intel Celeron U3400

Reasons to consider the
Intel Celeron U3400

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Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 14.63W vs 69.88W 4.8x lower typical power consumption
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Newer May, 2010 vs Jan, 2006 Release date over 4 years later
Much lower annual home energy cost 4.34 $/year vs 20.72 $/year 4.8x lower annual home energy cost
Much lower annual commercial energy cost 15.77 $/year vs 75.34 $/year 4.8x lower annual commercial energy cost
More cores 2 vs 1 Twice as many cores; run more applications at once

Features Key features of the Pentium 4 641  vs Celeron U3400 

clock speed

Pentium 4 641
3.2 GHz
Celeron U3400
1.06 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 641
4.53 GHz
Celeron U3400
1.07 GHz

overclocked clock speed (water)

Pentium 4 641
4.64 GHz
Celeron U3400
1.07 GHz

Specifications Full list of technical specs

summary

Pentium 4 641  vs
Celeron U3400 
Clock speed 3.2 GHz 1.06 GHz
Cores Single core Dual core
Socket type
LGA 775
BGA 1288

features

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

power consumption

TDP 86W 18W
Annual home energy cost 20.72 $/year 4.34 $/year
Annual commercial energy cost 75.34 $/year 15.77 $/year
Typical power consumption 69.88W 14.63W

bus

Architecture FSB DMI
Number of links 1 1

details

Pentium 4 641  vs
Celeron U3400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 32 nm
Transistor count 188,000,000 382,000,000
Max CPUs 1 1
Clock multiplier 16 8

overclocking

Overclocked clock speed 4.53 GHz 1.07 GHz
Overclocked clock speed (Water) 4.64 GHz 1.07 GHz
Overclocked clock speed (Air) 4.53 GHz 1.07 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 166 MHz
Turbo clock speed N/A 500 MHz

memory controller

Memory controller Built-in Built-in
Supports ECC No No
Intel Pentium 4 641
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Intel Celeron U3400
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