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Differences What are the advantages of each

Front view of AMD Athlon X2 4400+

Reasons to consider the
AMD Athlon X2 4400+

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Front view of AMD Athlon 64 X2 4400+

Reasons to consider the
AMD Athlon 64 X2 4400+

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Higher clock speed 2.3 GHz vs 2.2 GHz Around 5% higher clock speed
Significantly lower typical power consumption 52.81W vs 72.31W More than 25% lower typical power consumption
Significantly lower annual home energy cost 15.66 $/year vs 21.44 $/year More than 25% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 77.96 $/year More than 25% lower annual commercial energy cost

Features Key features of the Athlon X2 4400+  vs 64 X2 4400+ 

clock speed

L2 cache

Specifications Full list of technical specs

summary

Athlon X2 4400+  vs
64 X2 4400+ 
Clock speed 2.2 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
AM2
939

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

details

Athlon X2 4400+  vs
64 X2 4400+ 
Threads 2 2
L2 cache 2 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 90 nm 90 nm
Max CPUs 1 1

power consumption

TDP 89W 65W
Annual home energy cost 21.44 $/year 15.66 $/year
Annual commercial energy cost 77.96 $/year 56.94 $/year
Typical power consumption 72.31W 52.81W
AMD Athlon X2 4400+
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AMD Athlon 64 X2 4400+
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