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Differences What are the advantages of each

Front view of Intel Celeron D 330J

Reasons to consider the
Intel Celeron D 330J

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Significantly higher clock speed 2.66 GHz vs 1.66 GHz More than 60% higher clock speed
Much better overclocked clock speed (Air) 3.76 GHz vs 1.88 GHz Around 2x better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.67 GHz vs 1.67 GHz More than 60% better overclocked clock speed (Water)
Front view of Intel Atom N455

Reasons to consider the
Intel Atom N455

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Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
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
Much lower typical power consumption 5.28W vs 68.25W 12.9x lower typical power consumption
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 0.5 MB vs 0.25 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Newer Jun, 2010 vs Oct, 2004 Release date over 5 years later
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 1.57 $/year vs 20.24 $/year 12.9x lower annual home energy cost
Much lower annual commercial energy cost 5.69 $/year vs 73.58 $/year 12.9x lower annual commercial energy cost

Features Key features of the Celeron D 330J  vs Atom N455 

clock speed

Celeron D 330J
2.66 GHz
Atom N455
1.66 GHz

L2 cache

Celeron D 330J
0.25 MB
Atom N455
0.5 MB

overclocked clock speed (air)

Celeron D 330J
3.76 GHz
Atom N455
1.88 GHz

overclocked clock speed (water)

Celeron D 330J
2.67 GHz
Atom N455
1.67 GHz

TDP

Specifications Full list of technical specs

summary

Celeron D 330J  vs
Atom N455 
Clock speed 2.66 GHz 1.66 GHz
Cores Single core Single core

features

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

power consumption

TDP 84W 6.5W
Annual home energy cost 20.24 $/year 1.57 $/year
Annual commercial energy cost 73.58 $/year 5.69 $/year
Typical power consumption 68.25W 5.28W

bus

Architecture FSB DMI
Number of links 1 1

details

Celeron D 330J  vs
Atom N455 
Architecture x86 x86-64
Threads 1 2
L2 cache 0.25 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 90 nm 45 nm
Transistor count 125,000,000 123,000,000
Max CPUs 1 1
Clock multiplier 20 10

overclocking

Overclocked clock speed 3.76 GHz 1.88 GHz
Overclocked clock speed (Water) 2.67 GHz 1.67 GHz
Overclocked clock speed (Air) 3.76 GHz 1.88 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Intel Celeron D 330J
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Intel Atom N455
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