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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 more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Much better overclocked clock speed (Air) 4.22 GHz vs 3.6 GHz More than 15% better overclocked clock speed (Air)
Higher Maximum operating temperature 72.4 °C vs 70 °C Around 5% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.23 GHz vs 3.6 GHz Around 20% better overclocked clock speed (Water)
Front view of AMD A6 5400B

Reasons to consider the
AMD A6 5400B

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Much higher clock speed 3.6 GHz vs 3 GHz More than 20% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Oct, 2012 vs Jan, 2008 Release date over 4 years later

Benchmarks Real world tests of Core2 Duo E8400 vs A6 5400B

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 5400B
2,867.5

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 5400B
1,864.5

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
A6 5400B
2,030 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
A6 5400B 
Clock speed 3 GHz 3.6 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

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 1.42 pt/W
Typical power consumption 52.81W 52.81W

details

Core2 Duo E8400  vs
A6 5400B 
Threads 2 2
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Transistor count 410,000,000 1,303,000,000
Max CPUs 1 1
Voltage range 0.85 - 1.36V 0.82 - 1.48V
Operating temperature Unknown - 72.4°C Unknown - 70°C

overclocking

Overclocked clock speed 4.22 GHz 3.6 GHz
Overclocked clock speed (Water) 4.23 GHz 3.6 GHz
Overclocked clock speed (Air) 4.22 GHz 3.6 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 7540D
Latest DirectX N/A 11.0
GPU clock speed N/A 760 MHz
Intel Core2 Duo E8400
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AMD A6 5400B
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