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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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CPUBoss is not aware of any important advantages of the Intel Core2 Duo E8400 vs the AMD Athlon II X2 270.

Front view of AMD Athlon II X2 270

Reasons to consider the
AMD Athlon II X2 270

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Much higher clock speed 3.4 GHz vs 3 GHz Around 15% higher clock speed

Benchmarks Real world tests of Core2 Duo E8400 vs Athlon II X2 270

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
Athlon II X2 270
136,900 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Athlon II X2 270 
Clock speed 3 GHz 3.4 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

bus

Clock speed 1,333 MHz 3,400 MHz

details

Core2 Duo E8400  vs
Athlon II X2 270 
Threads 2 2
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1

overclocking

Overclock popularity 125 1
Overclock review score 4.5 0
Overclocked clock speed 4.23 GHz 4.02 GHz
Overclocked clock speed (Water) 4.22 GHz 4.09 GHz
Overclocked clock speed (Air) 4.23 GHz 4.02 GHz

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.83 pt/W 2.03 pt/W
Typical power consumption 52.81W 52.81W
Intel Core2 Duo E8400
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AMD Athlon II X2 270
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