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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 0.5 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 65 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark (Single core) score 806 vs 561 Around 45% better PassMark (Single core) score
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Air) 3.37 GHz vs 2.47 GHz More than 35% better overclocked clock speed (Air)
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
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 2.74 GHz More than 45% better overclocked clock speed (Water)
Front view of AMD Athlon XP 3000+

Reasons to consider the
AMD Athlon XP 3000+

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CPUBoss is not aware of any important advantages of the AMD Athlon XP 3000+ vs the Intel Core2 Duo E6420.

Benchmarks Real world tests of Core2 Duo E6420 vs Athlon XP 3000+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E6420  vs
Athlon XP 3000+ 
Clock speed 2.13 GHz 2.1 GHz
Cores Dual core Single core
Socket type
LGA 775
462

features

Has a NX bit Yes No
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3

bus

Clock speed 1,066 MHz 400 MHz

details

Core2 Duo E6420  vs
Athlon XP 3000+ 
Threads 2 1
L2 cache 4 MB 0.5 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 130 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.37 GHz 2.47 GHz
Overclocked clock speed (Water) 4 GHz 2.74 GHz
Overclocked clock speed (Air) 3.37 GHz 2.47 GHz

power consumption

Typical power consumption 52.81W N/A
Intel Core2 Duo E6420
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AMD Athlon XP 3000+
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