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Differences What are the advantages of each

Front view of Intel Celeron Mendocino

Reasons to consider the
Intel Celeron Mendocino

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Significantly higher Maximum operating temperature 85 °C vs 60.4 °C More than 40% higher Maximum operating temperature
Lower typical power consumption 19.26W vs 28.44W More than 30% lower typical power consumption
Lower annual home energy cost 5.71 $/year vs 8.43 $/year More than 30% lower annual home energy cost
Lower annual commercial energy cost 20.76 $/year vs 30.66 $/year More than 30% lower annual commercial energy cost
Front view of Intel Celeron M 420

Reasons to consider the
Intel Celeron M 420

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Much newer manufacturing process 65 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 0.4 GHz More than 4x higher clock speed
Significantly more l2 cache 1 MB vs 0.13 MB Around 7.8x more l2 cache; more data can be stored in the l2 cache for quick access later
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
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 0.13 MB/core Around 7.8x more l2 cache per core
Newer Apr, 2007 vs Aug, 1998 Release date over 8 years later

Features Key features of the Celeron Mendocino  vs M 420 

clock speed

L2 cache

Specifications Full list of technical specs

summary

Celeron Mendocino  vs
M 420 
Clock speed 0.4 GHz 1.6 GHz
Cores Single core Single core
Socket type
370
LGA 775
478

features

Has a NX bit No Yes
Supports trusted computing No No
Has virtualization support No No
Supports dynamic frequency scaling No No

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 66 MHz 800 MHz

details

Celeron Mendocino  vs
M 420 
Architecture x86 x86-64
Threads 1 1
L2 cache 0.13 MB 1 MB
L2 cache per core 0.13 MB/core 1 MB/core
Manufacture process 250 nm 65 nm
Transistor count 19,000,000 105,000,000
Max CPUs 1 1
Clock multiplier 6 8
Operating temperature Unknown - 85°C Unknown - 60.4°C

power consumption

TDP 23.7W 35W
Annual home energy cost 5.71 $/year 8.43 $/year
Annual commercial energy cost 20.76 $/year 30.66 $/year
Typical power consumption 19.26W 28.44W
Intel Celeron Mendocino
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Intel Celeron M 420
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