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Differences What are the advantages of each

Front view of AMD Sempron X2 2100

Reasons to consider the
AMD Sempron X2 2100

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Much lower typical power consumption 52.81W vs 152.93W 2.9x lower typical power consumption
Much lower annual home energy cost 15.66 $/year vs 54.06 $/year 3.5x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 152.42 $/year 2.7x lower annual commercial energy cost
Front view of AMD Phenom II X4 965

Reasons to consider the
AMD Phenom II X4 965

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Much higher clock speed 3.4 GHz vs 1.8 GHz Around 90% higher clock speed
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 better PassMark score 5,916 vs 869 More than 6.8x better PassMark score
Much better PassMark (Single core) score 1,361 vs 555 Around 2.5x better PassMark (Single core) score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Air) 4.05 GHz vs 2.95 GHz More than 35% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.22 GHz vs 1.8 GHz More than 2.2x better overclocked clock speed (Water)

Benchmarks Real world tests of Sempron X2 2100 vs Phenom II X4 965

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 X2 2100
49.8 MB/s
Phenom II X4 965
137,800 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron X2 2100  vs
Phenom II X4 965 
Clock speed 1.8 GHz 3.4 GHz
Cores Dual core Quad core
Socket type
AM2
AM3

features

Has a NX bit Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!

bus

Clock speed 800 MHz 2,000 MHz

details

Sempron X2 2100  vs
Phenom II X4 965 
Threads 2 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 65 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.95 GHz 4.05 GHz
Overclocked clock speed (Water) 1.8 GHz 4.22 GHz
Overclocked clock speed (Air) 2.95 GHz 4.05 GHz

power consumption

TDP 65W 140W
Annual home energy cost 15.66 $/year 54.06 $/year
Annual commercial energy cost 56.94 $/year 152.42 $/year
Performance per watt 0.6 pt/W 1.08 pt/W
Typical power consumption 52.81W 152.93W
AMD Sempron X2 2100
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AMD Phenom II X4 965
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