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Differences What are the advantages of each

Front view of Intel Pentium III 550E

Reasons to consider the
Intel Pentium III 550E

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower typical power consumption 11.78W vs 28.44W 2.4x lower typical power consumption
Significantly higher Maximum operating temperature 82 °C vs 60.4 °C More than 35% higher Maximum operating temperature
Lower annual home energy cost 3.49 $/year vs 8.43 $/year 2.4x lower annual home energy cost
Lower annual commercial energy cost 12.7 $/year vs 30.66 $/year 2.4x lower annual commercial energy cost
Front view of Intel Celeron M 430

Reasons to consider the
Intel Celeron M 430

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Much newer manufacturing process 65 nm vs 180 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 1.8 GHz vs 0.55 GHz More than 3.2x 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 NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Newer Apr, 2007 vs Oct, 1999 Release date over 7 years later

Features Key features of the Pentium III 550E  vs Celeron M 430 

clock speed

Pentium III 550E
0.55 GHz
Celeron M 430
1.8 GHz

L2 cache

Specifications Full list of technical specs


Pentium III 550E  vs
Celeron M 430 
Clock speed 0.55 GHz 1.8 GHz
Cores Single core Single core
Socket type
LGA 775


Has a NX bit No Yes
Has virtualization support No No
Instruction set extensions
Supports dynamic frequency scaling No No

power consumption

TDP 14.5W 35W
Annual home energy cost 3.49 $/year 8.43 $/year
Annual commercial energy cost 12.7 $/year 30.66 $/year
Typical power consumption 11.78W 28.44W


Pentium III 550E  vs
Celeron M 430 
Architecture x86 x86-64
Threads 1 1
L2 cache 0.25 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 180 nm 65 nm
Max CPUs 2 1
Clock multiplier 5 9
Operating temperature Unknown - 82°C Unknown - 60.4°C

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A


Architecture FSB FSB
Number of links 1 1
Clock speed 100 MHz 800 MHz
Intel Pentium III 550E
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Intel Celeron M 430
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