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Differences What are the advantages of each

Front view of AMD Athlon X2 6500

Reasons to consider the
AMD Athlon X2 6500

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Much more l3 cache 2 MB vs 0 MB Compared to all cpus, 2 MB l3 cache is just OK
Much more l3 cache per core 1 MB/core vs 0 MB/core Compared to all cpus, 1 MB/core l3 cache per core is just OK
Front view of AMD Athlon II X2 250

Reasons to consider the
AMD Athlon II X2 250

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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 newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 3 GHz vs 2.3 GHz More than 30% higher clock speed
Much better overclocked clock speed (Air) 3.72 GHz vs 2.89 GHz Around 30% 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
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Much better overclocked clock speed (Water) 4.04 GHz vs 2.3 GHz More than 75% better overclocked clock speed (Water)
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Newer Jun, 2009 vs Sep, 2008 Release date 8 months later

Benchmarks Real world tests of Athlon X2 6500 vs II X2 250

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 6500  vs
II X2 250 
Clock speed 2.3 GHz 3 GHz
Cores Dual core Dual core

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 X2 6500  vs
II X2 250 
Threads 2 2
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 2 MB 0 MB
L3 cache per core 1 MB/core 0 MB/core
Manufacture process 65 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.89 GHz 3.72 GHz
Overclocked clock speed (Water) 2.3 GHz 4.04 GHz
PassMark (Overclocked) 1,605.2 2,374.3
Overclocked clock speed (Air) 2.89 GHz 3.72 GHz

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 1.79 pt/W 1.79 pt/W
Typical power consumption 77.19W 52.81W
AMD Athlon X2 6500
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AMD Athlon II X2 250
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