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Differences What are the advantages of each

Front view of AMD Athlon X2 4000+

Reasons to consider the
AMD Athlon X2 4000+

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Higher clock speed 2.1 GHz vs 1.8 GHz More than 15% higher clock speed
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Much better overclocked clock speed (Water) 3.24 GHz vs 1.8 GHz Around 80% better overclocked clock speed (Water)
Front view of AMD Athlon II 160u

Reasons to consider the
AMD Athlon II 160u

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better performance per watt 2.97 pt/W vs 0.73 pt/W More than 4x better performance per watt
Much higher Maximum operating temperature 80 °C vs 55 °C More than 45% higher Maximum operating temperature
Much lower typical power consumption 16.25W vs 52.81W 3.2x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Air) 3.08 GHz vs 2.77 GHz More than 10% better overclocked clock speed (Air)
Much lower annual home energy cost 4.82 $/year vs 15.66 $/year 3.2x lower annual home energy cost
Much lower annual commercial energy cost 17.52 $/year vs 56.94 $/year 3.3x lower annual commercial energy cost

Benchmarks Real world tests of Athlon X2 4000+ vs II 160u

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Athlon X2 4000+
62.3 MB/s
Athlon II 160u
71,200 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 4000+  vs
II 160u 
Clock speed 2.1 GHz 1.8 GHz
Cores Dual core Single 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

Athlon X2 4000+  vs
II 160u 
Threads 2 1
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 55°C Unknown - 80°C

overclocking

Overclocked clock speed 2.77 GHz 3.08 GHz
Overclocked clock speed (Water) 3.24 GHz 1.8 GHz
Overclocked clock speed (Air) 2.77 GHz 3.08 GHz

power consumption

TDP 65W 20W
Annual home energy cost 15.66 $/year 4.82 $/year
Annual commercial energy cost 56.94 $/year 17.52 $/year
Performance per watt 0.73 pt/W 2.97 pt/W
Typical power consumption 52.81W 16.25W
AMD Athlon X2 4000+
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AMD Athlon II 160u
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