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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
Much higher clock speed 3.1 GHz vs 1.6 GHz Around 95% higher clock speed
Much better overclocked clock speed (Air) 3.23 GHz vs 1.6 GHz More than 2x better overclocked clock speed (Air)
Newer Jan, 2011 vs May, 2004 Release date over 6 years later
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 3.23 GHz vs 1.6 GHz More than 2x better overclocked clock speed (Water)
Front view of AMD Athlon 64 2700+

Reasons to consider the
AMD Athlon 64 2700+

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Much lower typical power consumption 28.44W vs 98.28W 3.5x lower typical power consumption
Much higher Maximum operating temperature 95 °C vs 69.1 °C More than 35% higher Maximum operating temperature
Much lower annual home energy cost 8.43 $/year vs 37.88 $/year 4.5x lower annual home energy cost
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual commercial energy cost 30.66 $/year vs 93.47 $/year 3x lower annual commercial energy cost

Features Key features of the Core i3 2100  vs Athlon 64 2700+ 

clock speed

Core i3 2100
3.1 GHz
Athlon 64 2700+
1.6 GHz

L2 cache

overclocked clock speed (air)

Core i3 2100
3.23 GHz
Athlon 64 2700+
1.6 GHz

overclocked clock speed (water)

Core i3 2100
3.23 GHz
Athlon 64 2700+
1.6 GHz

Specifications Full list of technical specs

summary

Core i3 2100  vs
Athlon 64 2700+ 
Clock speed 3.1 GHz 1.6 GHz
Cores Dual core Single core
Socket type
LGA 1155
754

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3

details

Core i3 2100  vs
Athlon 64 2700+ 
Threads 4 1
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 95°C

overclocking

Overclocked clock speed 3.23 GHz 1.6 GHz
Overclocked clock speed (Water) 3.23 GHz 1.6 GHz
Overclocked clock speed (Air) 3.23 GHz 1.6 GHz

power consumption

TDP 65W 35W
Annual home energy cost 37.88 $/year 8.43 $/year
Annual commercial energy cost 93.47 $/year 30.66 $/year
Typical power consumption 98.28W 28.44W
Intel Core i3 2100
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AMD Athlon 64 2700+
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