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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 higher clock speed 3 GHz vs 1.6 GHz More than 85% higher clock speed
Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
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 more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Significantly better overclocked clock speed (Air) 3.72 GHz vs 2.4 GHz Around 55% better overclocked clock speed (Air)
Better PassMark (Single core) score 1,008 vs 449 Around 2.2x better PassMark (Single core) score
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
Better PassMark score 1,750 vs 374 Around 4.8x better PassMark score
Front view of AMD Athlon 64 2600+

Reasons to consider the
AMD Athlon 64 2600+

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Much lower typical power consumption 12.19W vs 52.81W 4.3x lower typical power consumption
Higher Maximum operating temperature 85 °C vs 74 °C Around 15% higher Maximum operating temperature
Much lower annual home energy cost 3.61 $/year vs 15.66 $/year 4.3x lower annual home energy cost
Much lower annual commercial energy cost 13.14 $/year vs 56.94 $/year 4.3x lower annual commercial energy cost

Benchmarks Real world tests of Athlon II X2 250 vs 64 2600+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X2 250  vs
64 2600+ 
Clock speed 3 GHz 1.6 GHz
Cores Dual core Single core
Socket type
AM3
AM2

features

Has a NX bit Yes Yes
Has virtualization support 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
Supports dynamic frequency scaling Yes Yes

details

Athlon II X2 250  vs
64 2600+ 
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 65 nm
Max CPUs 1 1
Operating temperature Unknown - 74°C Unknown - 85°C

overclocking

Overclock popularity 25 0
Overclocked clock speed 3.72 GHz 2.4 GHz
Overclocked clock speed (Water) 4.04 GHz 1.6 GHz
Overclocked clock speed (Air) 3.72 GHz 2.4 GHz

power consumption

TDP 65W 15W
Annual home energy cost 15.66 $/year 3.61 $/year
Annual commercial energy cost 56.94 $/year 13.14 $/year
Performance per watt 1.79 pt/W 2.19 pt/W
Typical power consumption 52.81W 12.19W
AMD Athlon II X2 250
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AMD Athlon 64 2600+
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