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Differences What are the advantages of each

Front view of Intel Pentium 4 530J

Reasons to consider the
Intel Pentium 4 530J

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Significantly higher clock speed 3 GHz vs 2.16 GHz Around 40% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Front view of Intel Celeron N2840

Reasons to consider the
Intel Celeron N2840

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Much newer manufacturing process 22 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 6.09W vs 68.25W 11.2x 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
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Newer Jul, 2014 vs Oct, 2004 Release date over 9 years later
Much lower annual home energy cost 1.81 $/year vs 20.24 $/year 11.2x lower annual home energy cost
Much lower annual commercial energy cost 6.57 $/year vs 73.58 $/year 11.2x lower annual commercial energy cost
More cores 2 vs 1 Twice as many cores; run more applications at once

Features Key features of the Pentium 4 530J  vs Celeron N2840 

clock speed

Celeron N2840
2.16 GHz

L2 cache

Specifications Full list of technical specs

summary

Pentium 4 530J  vs
Celeron N2840 
Clock speed 3 GHz 2.16 GHz
Cores Single core Dual core

features

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

power consumption

TDP 84W 7.5W
Annual home energy cost 20.24 $/year 1.81 $/year
Annual commercial energy cost 73.58 $/year 6.57 $/year
Typical power consumption 68.25W 6.09W

details

Pentium 4 530J  vs
Celeron N2840 
Architecture x86 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 22 nm
Max CPUs 1 1

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 311 MHz
Turbo clock speed N/A 792 MHz

bus

Architecture FSB FSB
Number of links 1 1
Intel Pentium 4 530J
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Intel Celeron N2840
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