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Differences What are the advantages of each

Front view of AMD Athlon II X2 221

Reasons to consider the
AMD Athlon II X2 221

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Higher clock speed 2.8 GHz vs 2.7 GHz Around 5% higher clock speed
Better overclocked clock speed (Water) 2.8 GHz vs 2.7 GHz Around 5% better overclocked clock speed (Water)
Front view of AMD A4 3400

Reasons to consider the
AMD A4 3400

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 3.5 GHz vs 2.8 GHz Around 25% better overclocked clock speed (Air)
Much higher Maximum operating temperature 71.5 °C vs 65 °C 10% higher Maximum operating temperature

Features Key features of the Athlon II X2 221  vs A4 3400 

clock speed

A4 3400
2.7 GHz

L2 cache

overclocked clock speed (air)

A4 3400
3.5 GHz

overclocked clock speed (water)

A4 3400
2.7 GHz

Specifications Full list of technical specs

summary

Athlon II X2 221  vs
A4 3400 
Clock speed 2.8 GHz 2.7 GHz
Turbo clock speed None None
Cores Dual core Dual core
Socket type
FM1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
AMD-V
3DNow!
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
Typical power consumption 52.81W 52.81W

details

Athlon II X2 221  vs
A4 3400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,178,000,000 1,178,000,000
Max CPUs 1 1
Die size 228 mm² 228 mm²
Voltage range 0.91 - 1.41V 0.91 - 1.41V
Operating temperature Unknown - 65°C Unknown - 71.5°C

overclocking

Overclocked clock speed 2.8 GHz 3.5 GHz
Overclocked clock speed (Water) 2.8 GHz 2.7 GHz
Overclocked clock speed (Air) 2.8 GHz 3.5 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 6410D
Latest DirectX N/A 11.0
GPU clock speed N/A 600 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
AMD Athlon II X2 221
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AMD A4 3400
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