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Differences What are the advantages of each

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
Higher clock speed 3.1 GHz vs 2.8 GHz More than 10% higher clock speed
More threads 4 vs 2 Twice as many threads
Much better performance per watt 1.41 pt/W vs 0.59 pt/W Around 2.5x better performance per watt
Much higher Maximum operating temperature 69.1 °C vs 63 °C Around 10% higher Maximum operating temperature
Significantly better overclocked clock speed (Air) 3.23 GHz vs 3.05 GHz More than 5% better overclocked clock speed (Air)
Slightly lower typical power consumption 98.28W vs 101.56W Around 5% lower typical power consumption
Newer Jan, 2011 vs Nov, 2006 Release date over 4 years later
Significantly better overclocked clock speed (Water) 3.23 GHz vs 2.8 GHz More than 15% better overclocked clock speed (Water)
Significantly lower annual commercial energy cost 93.47 $/year vs 109.5 $/year Around 15% lower annual commercial energy cost
Front view of AMD Athlon 64 FX 72

Reasons to consider the
AMD Athlon 64 FX 72

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Much more l2 cache 2 MB vs 0.5 MB 4x 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 annual home energy cost 30.11 $/year vs 37.88 $/year More than 20% lower annual home energy cost

Benchmarks Real world tests of Core i3 2100 vs Athlon 64 FX 72

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Core i3 2100  vs
Athlon 64 FX 72 
Clock speed 3.1 GHz 2.8 GHz
Cores Dual core Dual core
Socket type
LGA 1155
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

details

Core i3 2100  vs
Athlon 64 FX 72 
Threads 4 2
L2 cache 0.5 MB 2 MB
L2 cache per core 0.25 MB/core 1 MB/core
Manufacture process 32 nm 90 nm
Operating temperature Unknown - 69.1°C Unknown - 63°C

overclocking

Overclocked clock speed 3.23 GHz 3.05 GHz
Overclocked clock speed (Water) 3.23 GHz 2.8 GHz
Overclocked clock speed (Air) 3.23 GHz 3.05 GHz

power consumption

TDP 65W 125W
Annual home energy cost 37.88 $/year 30.11 $/year
Annual commercial energy cost 93.47 $/year 109.5 $/year
Performance per watt 1.41 pt/W 0.59 pt/W
Typical power consumption 98.28W 101.56W
Intel Core i3 2100
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AMD Athlon 64 FX 72
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