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Differences What are the advantages of each

Front view of Intel Pentium 4 561

Reasons to consider the
Intel Pentium 4 561

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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
Significantly higher clock speed 3.6 GHz vs 3.1 GHz More than 15% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Air) 4.06 GHz vs 3.23 GHz More than 25% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 72.8 °C vs 69.1 °C More than 5% higher Maximum operating temperature
Lower typical power consumption 93.44W vs 98.28W Around 5% lower typical power consumption
Much lower annual home energy cost 27.7 $/year vs 37.88 $/year More than 25% lower annual home energy cost
Significantly better overclocked clock speed (Water) 3.6 GHz vs 3.23 GHz More than 10% better overclocked clock speed (Water)
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
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 Jul, 2005 Release date over 5 years later
Lower annual commercial energy cost 93.47 $/year vs 100.74 $/year More than 5% lower annual commercial energy cost

Features Key features of the Pentium 4 561  vs Core i3 2100 

clock speed

Pentium 4 561
3.6 GHz
Core i3 2100
3.1 GHz

L2 cache

overclocked clock speed (air)

Pentium 4 561
4.06 GHz
Core i3 2100
3.23 GHz

overclocked clock speed (water)

Pentium 4 561
3.6 GHz
Core i3 2100
3.23 GHz

Specifications Full list of technical specs

summary

Pentium 4 561  vs
Core i3 2100 
Clock speed 3.6 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

bus

Architecture FSB DMI
Number of links 1 1

details

Pentium 4 561  vs
Core i3 2100 
Architecture x86-64 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 18 31
Operating temperature Unknown - 72.8°C Unknown - 69.1°C

overclocking

Overclocked clock speed 4.06 GHz 3.23 GHz
Overclocked clock speed (Water) 3.6 GHz 3.23 GHz
Overclocked clock speed (Air) 4.06 GHz 3.23 GHz

power consumption

TDP 115W 65W
Annual home energy cost 27.7 $/year 37.88 $/year
Annual commercial energy cost 100.74 $/year 93.47 $/year
Typical power consumption 93.44W 98.28W
Intel Pentium 4 561
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Intel Core i3 2100
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