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Differences What are the advantages of each

Front view of Intel Core2 Duo E6420

Reasons to consider the
Intel Core2 Duo E6420

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 2.13 GHz vs 1.6 GHz Around 35% higher clock speed
Much better overclocked clock speed (Air) 3.37 GHz vs 1.6 GHz More than 2x better overclocked clock speed (Air)
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Water) 4 GHz vs 1.6 GHz Around 2.5x better overclocked clock speed (Water)
Front view of AMD Athlon 64 X2 3000+

Reasons to consider the
AMD Athlon 64 X2 3000+

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Much higher Maximum operating temperature 95 °C vs 60.1 °C Around 60% higher Maximum operating temperature
Much lower typical power consumption 16.25W vs 52.81W 3.2x lower typical power consumption
Much lower annual home energy cost 4.82 $/year vs 15.66 $/year 3.2x lower annual home energy cost
Much lower annual commercial energy cost 17.52 $/year vs 56.94 $/year 3.3x lower annual commercial energy cost

Features Key features of the Core2 Duo E6420  vs Athlon 64 X2 3000+ 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Core2 Duo E6420  vs
Athlon 64 X2 3000+ 
Clock speed 2.13 GHz 1.6 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3

details

Core2 Duo E6420  vs
Athlon 64 X2 3000+ 
Threads 2 2
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 60.1°C Unknown - 95°C

overclocking

Overclocked clock speed 3.37 GHz 1.6 GHz
Overclocked clock speed (Water) 4 GHz 1.6 GHz
Overclocked clock speed (Air) 3.37 GHz 1.6 GHz

power consumption

TDP 65W 20W
Annual home energy cost 15.66 $/year 4.82 $/year
Annual commercial energy cost 56.94 $/year 17.52 $/year
Typical power consumption 52.81W 16.25W
Intel Core2 Duo E6420
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AMD Athlon 64 X2 3000+
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