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Differences What are the advantages of each

Front view of AMD Sempron 2100+

Reasons to consider the
AMD Sempron 2100+

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Much better geekbench 3 AES single core score 58,900 MB/s vs 64.85 MB/s Around 908.2x better geekbench 3 AES single core score
Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 6.5W vs 72.31W 11.1x lower typical power consumption
Much better performance per watt 6.69 pt/W vs 0.61 pt/W Around 11x better performance per watt
Significantly higher Maximum operating temperature 95 °C vs 70 °C More than 35% higher Maximum operating temperature
Much lower annual home energy cost 1.93 $/year vs 21.44 $/year 11.1x lower annual home energy cost
Much lower annual commercial energy cost 7.01 $/year vs 77.96 $/year 11.1x lower annual commercial energy cost
Front view of AMD Athlon 64 X2 5000+

Reasons to consider the
AMD Athlon 64 X2 5000+

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Much higher clock speed 2.6 GHz vs 1 GHz More than 2.5x higher clock speed
Significantly more l2 cache 1 MB vs 0.25 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better overclocked clock speed (Air) 3.13 GHz vs 1 GHz Around 3.2x better overclocked clock speed (Air)
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Water) 3.39 GHz vs 1 GHz Around 3.5x better overclocked clock speed (Water)
More cores 2 vs 1 Twice as many cores; run more applications at once
Better PassMark score 1,497 vs 392 More than 3.8x better PassMark score

Benchmarks Real world tests of Sempron 2100+ vs Athlon 64 X2 5000+

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

Sempron 2100+
58,900 MB/s
Athlon 64 X2 5000+
64.85 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron 2100+  vs
Athlon 64 X2 5000+ 
Clock speed 1 GHz 2.6 GHz
Cores Single core Dual core

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!

details

Sempron 2100+  vs
Athlon 64 X2 5000+ 
Threads 1 2
L2 cache 0.25 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 65 nm 90 nm
Max CPUs 1 1
Operating temperature Unknown - 95°C Unknown - 70°C

overclocking

Overclocked clock speed 1 GHz 3.13 GHz
Overclocked clock speed (Water) 1 GHz 3.39 GHz
PassMark (Overclocked) 1,478.1 1,518.5
Overclocked clock speed (Air) 1 GHz 3.13 GHz

power consumption

TDP 8W 89W
Annual home energy cost 1.93 $/year 21.44 $/year
Annual commercial energy cost 7.01 $/year 77.96 $/year
Performance per watt 6.69 pt/W 0.61 pt/W
Typical power consumption 6.5W 72.31W
AMD Sempron 2100+
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AMD Athlon 64 X2 5000+
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