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Differences What are the advantages of each

Front view of Intel Pentium III 533EB

Reasons to consider the
Intel Pentium III 533EB

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Front view of Intel Atom N550

Reasons to consider the
Intel Atom N550

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Much newer manufacturing process 45 nm vs 180 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 1.5 GHz vs 0.53 GHz More than 2.8x higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Significantly more l2 cache 1 MB vs 0.25 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
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
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Newer Aug, 2010 vs Oct, 1999 Release date over 10 years later
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Slightly lower typical power consumption 6.91W vs 11.38W Around 40% lower typical power consumption
Slightly lower annual home energy cost 2.05 $/year vs 3.37 $/year Around 40% lower annual home energy cost
Slightly lower annual commercial energy cost 7.45 $/year vs 12.26 $/year Around 40% lower annual commercial energy cost

Features Key features of the Pentium III 533EB  vs Atom N550 

clock speed

Atom N550
1.5 GHz

L2 cache

Specifications Full list of technical specs

summary

Pentium III 533EB  vs
Atom N550 
Clock speed 0.53 GHz 1.5 GHz
Cores Single core Dual core

features

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

bus

Architecture FSB DMI
Number of links 1 1

details

Pentium III 533EB  vs
Atom N550 
Architecture x86 x86-64
Threads 1 4
L2 cache 0.25 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 180 nm 45 nm
Max CPUs 2 1

integrated graphics

GPU None GPU
Label N/A Integrated
GPU clock speed N/A 200 MHz

power consumption

TDP 14W 8.5W
Annual home energy cost 3.37 $/year 2.05 $/year
Annual commercial energy cost 12.26 $/year 7.45 $/year
Typical power consumption 11.38W 6.91W
Intel Pentium III 533EB
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Intel Atom N550
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