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Differences What are the advantages of each

Front view of AMD Phenom X4 9950

Reasons to consider the
AMD Phenom X4 9950

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CPUBoss is not aware of any important advantages of the Phenom X4 9950 vs the Athlon X2 6500.

Front view of AMD Athlon X2 6500

Reasons to consider the
AMD Athlon X2 6500

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CPUBoss is not aware of any important advantages of the Athlon X2 6500 vs the Phenom X4 9950.

Benchmarks Real world tests of Phenom X4 9950 vs Athlon X2 6500

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom X4 9950  vs
Athlon X2 6500 
Clock speed 2.6 GHz 2.3 GHz
Cores Quad core Dual core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

details

Phenom X4 9950  vs
Athlon X2 6500 
Threads 4 2
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 2 MB 2 MB
L3 cache per core 0.5 MB/core 1 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.11 GHz 2.89 GHz
Overclocked clock speed (Water) 3.37 GHz 2.3 GHz
PassMark (Overclocked) 2,145.3 1,605.2
Overclocked clock speed (Air) 3.11 GHz 2.89 GHz

power consumption

TDP 140W 95W
Annual home energy cost 33.73 $/year 22.89 $/year
Annual commercial energy cost 122.64 $/year 83.22 $/year
Performance per watt 0.88 pt/W 1.79 pt/W
Typical power consumption 113.75W 77.19W
AMD Phenom X4 9950
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AMD Athlon X2 6500
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