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Differences What are the advantages of each

Front view of AMD Athlon X2 4850e

Reasons to consider the
AMD Athlon X2 4850e

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Front view of AMD Athlon II X2 255e

Reasons to consider the
AMD Athlon II X2 255e

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Much higher clock speed 3.1 GHz vs 2.5 GHz Around 25% higher clock speed

Features Key features of the Athlon X2 4850e  vs II X2 255e 

clock speed

L2 cache

Specifications Full list of technical specs

summary

Athlon X2 4850e  vs
II X2 255e 
Clock speed 2.5 GHz 3.1 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes No
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

details

Athlon X2 4850e  vs
II X2 255e 
Threads 2 2
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 0.5 MB 0 MB
L3 cache per core 0.25 MB/core 0 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 78°C Unknown - 72°C

power consumption

TDP 45W 45W
Annual home energy cost 10.84 $/year 10.84 $/year
Annual commercial energy cost 39.42 $/year 39.42 $/year
Typical power consumption 36.56W 36.56W
AMD Athlon X2 4850e
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AMD Athlon II X2 255e
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