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Differences What are the advantages of each

Front view of Intel Pentium III 600B

Reasons to consider the
Intel Pentium III 600B

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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 N2600

Reasons to consider the
Intel Atom N2600

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Much newer manufacturing process 32 nm vs 250 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 1.6 GHz vs 0.6 GHz Around 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
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
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Newer Dec, 2011 vs Sep, 1999 Release date over 12 years later
Significantly lower typical power consumption 2.84W vs 28.03W 9.9x lower typical power consumption
Higher Maximum operating temperature 100 °C vs 85 °C Around 20% higher Maximum operating temperature
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Significantly lower annual home energy cost 0.84 $/year vs 8.31 $/year 9.9x lower annual home energy cost
Significantly lower annual commercial energy cost 3.07 $/year vs 30.22 $/year 9.9x lower annual commercial energy cost

Features Key features of the Pentium III 600B  vs Atom N2600 

clock speed

Atom N2600
1.6 GHz

L2 cache

TDP

Specifications Full list of technical specs

summary

Pentium III 600B  vs
Atom N2600 
Clock speed 0.6 GHz 1.6 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 600B  vs
Atom N2600 
Architecture x86 x86-64
Threads 1 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 250 nm 32 nm
Max CPUs 2 1
Operating temperature Unknown - 85°C Unknown - 100°C

integrated graphics

GPU None GPU
Label N/A Integrated
GPU clock speed N/A 400 MHz

power consumption

TDP 34.5W 3.5W
Annual home energy cost 8.31 $/year 0.84 $/year
Annual commercial energy cost 30.22 $/year 3.07 $/year
Typical power consumption 28.03W 2.84W
Intel Pentium III 600B
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Intel Atom N2600
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