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Differences What are the advantages of each

Front view of Intel Pentium 4 520J

Reasons to consider the
Intel Pentium 4 520J

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Much 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
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much lower typical power consumption 68.25W vs 98.28W More than 30% lower typical power consumption
Much better overclocked clock speed (Air) 3.77 GHz vs 3.23 GHz More than 15% better overclocked clock speed (Air)
Much lower annual home energy cost 20.24 $/year vs 37.88 $/year More than 45% lower annual home energy cost
Much better overclocked clock speed (Water) 4.16 GHz vs 3.23 GHz Around 30% better overclocked clock speed (Water)
Significantly lower annual commercial energy cost 73.58 $/year vs 93.47 $/year More than 20% lower annual commercial energy cost
Front view of Intel Core i3 2100

Reasons to consider the
Intel Core i3 2100

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher clock speed 3.1 GHz vs 2.8 GHz More than 10% 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
More cores 2 vs 1 Twice as many cores; run more applications at once
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 threads 4 vs 2 Twice as many threads
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Newer Jan, 2011 vs Apr, 2004 Release date over 6 years later
Higher Maximum operating temperature 69.1 °C vs 67.7 °C Almost the same

Features Key features of the Pentium 4 520J  vs Core i3 2100 

clock speed

Pentium 4 520J
2.8 GHz
Core i3 2100
3.1 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 520J
3.77 GHz
Core i3 2100
3.23 GHz

overclocked clock speed (water)

Pentium 4 520J
4.16 GHz
Core i3 2100
3.23 GHz

Specifications Full list of technical specs

summary

Pentium 4 520J  vs
Core i3 2100 
Clock speed 2.8 GHz 3.1 GHz
Cores Single core Dual core
Socket type
LGA 775
LGA 1155

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling No Yes

power consumption

TDP 84W 65W
Annual home energy cost 20.24 $/year 37.88 $/year
Annual commercial energy cost 73.58 $/year 93.47 $/year
Typical power consumption 68.25W 98.28W

details

Pentium 4 520J  vs
Core i3 2100 
Architecture x86 x86-64
Threads 2 4
L2 cache 1 MB 0.5 MB
L2 cache per core 1 MB/core 0.25 MB/core
Manufacture process 90 nm 32 nm
Max CPUs 1 1
Clock multiplier 14 31
Operating temperature Unknown - 67.7°C Unknown - 69.1°C

overclocking

Overclocked clock speed 3.77 GHz 3.23 GHz
Overclocked clock speed (Water) 4.16 GHz 3.23 GHz
PassMark (Overclocked) 579.4 1,518.9
Overclocked clock speed (Air) 3.77 GHz 3.23 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 2000
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,100 MHz

bus

Architecture FSB DMI
Number of links 1 1
Intel Pentium 4 520J
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Intel Core i3 2100
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