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Differences What are the advantages of each

Front view of AMD Athlon II X2 255e

Reasons to consider the
AMD Athlon II X2 255e

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Higher clock speed 3.1 GHz vs 3 GHz Around 5% higher clock speed
Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Significantly lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost
Front view of AMD Athlon II X2 250

Reasons to consider the
AMD Athlon II X2 250

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Higher Maximum operating temperature 74 °C vs 72 °C Around 5% higher Maximum operating temperature

Features Key features of the Athlon II X2 255e  vs 250 

clock speed

turbo clock speed

Specifications Full list of technical specs

summary

Athlon II X2 255e  vs
250 
Clock speed 3.1 GHz 3 GHz
Turbo clock speed 0 GHz 3.6 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
3DNow!
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

details

Athlon II X2 255e  vs
250 
Threads 2 2
L2 cache 2 MB 2 MB
L2 cache per core 1 MB/core 1 MB/core
L3 cache 0 MB 0 MB
L3 cache per core 0 MB/core 0 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 72°C Unknown - 74°C

power consumption

TDP 45W 65W
Annual home energy cost 10.84 $/year 15.66 $/year
Annual commercial energy cost 39.42 $/year 56.94 $/year
Typical power consumption 36.56W 52.81W

bus

Clock speed 2,000 MHz 2,000 MHz
AMD Athlon II X2 255e
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AMD Athlon II X2 250
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