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Differences What are the advantages of each

Front view of AMD Sempron 1250

Reasons to consider the
AMD Sempron 1250

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Much better overclocked clock speed (Air) 3.01 GHz vs 2.47 GHz More than 20% better overclocked clock speed (Air)
Front view of AMD Athlon 64 3100+

Reasons to consider the
AMD Athlon 64 3100+

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Much lower typical power consumption 20.31W vs 36.56W Around 45% lower typical power consumption
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much lower annual home energy cost 6.02 $/year vs 10.84 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 21.9 $/year vs 39.42 $/year Around 45% lower annual commercial energy cost

Benchmarks Real world tests of Sempron 1250 vs Athlon 64 3100+

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron 1250  vs
Athlon 64 3100+ 
Clock speed 2.2 GHz 1.8 GHz
Cores Single core Single core
Socket type
AM2
754
462

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!

bus

Clock speed 333 MHz 400 MHz

details

Sempron 1250  vs
Athlon 64 3100+ 
Threads 1 1
L2 cache 1 MB 1 MB
L2 cache per core 1 MB/core 1 MB/core
Manufacture process 65 nm 130 nm
Max CPUs 1 1
Operating temperature Unknown - 75°C Unknown - 70°C

overclocking

Overclocked clock speed 3.01 GHz 2.47 GHz
Overclocked clock speed (Water) 2.74 GHz 1.8 GHz
Overclocked clock speed (Air) 3.01 GHz 2.47 GHz

power consumption

TDP 45W 25W
Annual home energy cost 10.84 $/year 6.02 $/year
Annual commercial energy cost 39.42 $/year 21.9 $/year
Performance per watt 1.21 pt/W 1.84 pt/W
Typical power consumption 36.56W 20.31W
AMD Sempron 1250
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AMD Athlon 64 3100+
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