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Differences What are the advantages of each

Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much newer manufacturing process 45 nm vs 180 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache 6 MB vs 0.25 MB 24x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 3 GHz vs 1.53 GHz More than 95% higher clock speed
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
Has a NX bit Yes vs No Somewhat common; Prevents a common class of security exploits
Much better overclocked clock speed (Air) 4.22 GHz vs 1.76 GHz Around 2.5x better overclocked clock speed (Air)
Significantly better PassMark (Single core) score 1,251 vs 462 Around 2.8x better PassMark (Single core) score
Better PassMark score 2,160 vs 300 Around 7.2x better PassMark score
Much better overclocked clock speed (Water) 4.23 GHz vs 1.53 GHz More than 2.8x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of AMD Athlon MP 1800+

Reasons to consider the
AMD Athlon MP 1800+

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CPUBoss is not aware of any important advantages of the AMD Athlon MP 1800+ vs the Intel Core2 Duo E8400.

Benchmarks Real world tests of Core2 Duo E8400 vs Athlon MP 1800+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Athlon MP 1800+ 
Clock speed 3 GHz 1.53 GHz
Cores Dual core Single core
Socket type
LGA 775
462
563

features

Has a NX bit Yes No
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 1,333 MHz 266 MHz

details

Core2 Duo E8400  vs
Athlon MP 1800+ 
Threads 2 1
L2 cache 6 MB 0.25 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 180 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.22 GHz 1.76 GHz
Overclocked clock speed (Water) 4.23 GHz 1.53 GHz
Overclocked clock speed (Air) 4.22 GHz 1.76 GHz

power consumption

Typical power consumption 52.81W N/A
Intel Core2 Duo E8400
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AMD Athlon MP 1800+
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