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Differences What are the advantages of each

Front view of Intel Celeron 2955U

Reasons to consider the
Intel Celeron 2955U

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Much newer manufacturing process 22 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
More l2 cache 0.5 MB vs 0.25 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of AMD Athlon XP 1900+

Reasons to consider the
AMD Athlon XP 1900+

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Higher clock speed 1.6 GHz vs 1.4 GHz Around 15% higher clock speed

Features Key features of the Celeron 2955U  vs Athlon XP 1900+ 

clock speed

Celeron 2955U
1.4 GHz
Athlon XP 1900+
1.6 GHz

L2 cache

Specifications Full list of technical specs

summary

Celeron 2955U  vs
Athlon XP 1900+ 
Clock speed 1.4 GHz 1.6 GHz
Cores Dual core Single core
Socket type
BGA 1168
462

features

Has a NX bit Yes No
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3

details

Celeron 2955U  vs
Athlon XP 1900+ 
Threads 2 1
L2 cache 0.5 MB 0.25 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
Manufacture process 22 nm 130 nm
Max CPUs 1 1

power consumption

Typical power consumption 12.19W N/A
Intel Celeron 2955U
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AMD Athlon XP 1900+
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