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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
Higher clock speed 3 GHz vs 2.8 GHz More than 5% higher clock speed
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 3.58 GHz Around 20% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.23 GHz vs 2.8 GHz More than 50% better overclocked clock speed (Water)
Front view of AMD A4 3420

Reasons to consider the
AMD A4 3420

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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 Dec, 2011 vs Jan, 2008 Release date over 4 years later

Benchmarks Real world tests of Core2 Duo E8400 vs A4 3420

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A4 3420
2,532

GeekBench 3 (Single core) Data courtesy Primate Labs

A4 3420
1,403

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
A4 3420
113,100 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

A4 3420
2,510

GeekBench

A4 3420
3,395

PassMark Data courtesy Passmark

A4 3420
1,679

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
A4 3420 
Clock speed 3 GHz 2.8 GHz
Cores Dual core Dual core
Socket type
LGA 775
FM1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
SSE4.1
AMD-V
3DNow!
Supplemental SSE3
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 1.57 pt/W
Typical power consumption 52.81W 52.81W

details

Core2 Duo E8400  vs
A4 3420 
Architecture x86-64 x86-64
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 1,178,000,000
Max CPUs 1 1
Voltage range 0.85 - 1.36V 0.91 - 1.41V

overclocking

Overclocked clock speed 4.22 GHz 3.58 GHz
Overclocked clock speed (Water) 4.23 GHz 2.8 GHz
Overclocked clock speed (Air) 4.22 GHz 3.58 GHz

integrated graphics

GPU None GPU
Label N/A AMD Radeon HD 6410D
GPU clock speed N/A 600 MHz
Intel Core2 Duo E8400
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AMD A4 3420
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