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Differences What are the advantages of each

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 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3 GHz vs 1.6 GHz More than 85% higher clock speed
Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 3.72 GHz vs 1.6 GHz More than 2.2x better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Newer Jun, 2009 vs May, 2004 Release date over 5 years later
Much better overclocked clock speed (Water) 4.04 GHz vs 1.6 GHz More than 2.5x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Front view of AMD Athlon 64 2700+

Reasons to consider the
AMD Athlon 64 2700+

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Significantly lower typical power consumption 28.44W vs 52.81W More than 45% lower typical power consumption
Significantly higher Maximum operating temperature 95 °C vs 74 °C Around 30% higher Maximum operating temperature
Significantly lower annual home energy cost 8.43 $/year vs 15.66 $/year More than 45% lower annual home energy cost
Significantly lower annual commercial energy cost 30.66 $/year vs 56.94 $/year More than 45% lower annual commercial energy cost

Features Key features of the Athlon II X2 250  vs 64 2700+ 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Athlon II X2 250  vs
64 2700+ 
Clock speed 3 GHz 1.6 GHz
Cores Dual core Single core
Socket type
AM3
754

features

Has a NX bit Yes 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

details

Athlon II X2 250  vs
64 2700+ 
Threads 2 1
L2 cache 2 MB 0.5 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 1 1
Operating temperature Unknown - 74°C Unknown - 95°C

overclocking

Overclocked clock speed 3.72 GHz 1.6 GHz
Overclocked clock speed (Water) 4.04 GHz 1.6 GHz
Overclocked clock speed (Air) 3.72 GHz 1.6 GHz

power consumption

TDP 65W 35W
Annual home energy cost 15.66 $/year 8.43 $/year
Annual commercial energy cost 56.94 $/year 30.66 $/year
Typical power consumption 52.81W 28.44W
AMD Athlon II X2 250
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AMD Athlon 64 2700+
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