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Differences What are the advantages of each

Front view of Intel Pentium G620

Reasons to consider the
Intel Pentium G620

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Much newer manufacturing process 32 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much 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 higher clock speed 2.6 GHz vs 1.75 GHz Around 50% higher clock speed
Much better PassMark score 2,303 vs 340 More than 6.8x better PassMark score
Much better PassMark (Single core) score 1,326 vs 464 More than 2.8x better PassMark (Single core) score
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 performance per watt 1.64 pt/W vs 0.41 pt/W Around 4x better performance per watt
Much 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 (Air) 2.72 GHz vs 2.21 GHz Around 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 2.6 GHz vs 1.4 GHz More than 85% better overclocked clock speed (Water)
Newer Apr, 2011 vs Jul, 2004 Release date over 6 years later
Front view of AMD Sempron 2500+

Reasons to consider the
AMD Sempron 2500+

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Significantly lower typical power consumption 47.94W vs 70.8W More than 30% lower typical power consumption
Much lower annual home energy cost 14.21 $/year vs 27.64 $/year Around 50% lower annual home energy cost
Lower annual commercial energy cost 51.68 $/year vs 66.84 $/year Around 25% lower annual commercial energy cost

Benchmarks Real world tests of Pentium G620 vs Sempron 2500+

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

Pentium G620
128,700 MB/s
Sempron 2500+
38.7 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium G620  vs
Sempron 2500+ 
Clock speed 2.6 GHz 1.75 GHz
Cores Dual core Single core
Socket type
LGA 1155
754
462

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3

details

Pentium G620  vs
Sempron 2500+ 
Threads 2 1
L2 cache 1 MB 0.25 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
Manufacture process 32 nm 130 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 69°C

overclocking

Overclocked clock speed 2.72 GHz 2.21 GHz
Overclocked clock speed (Water) 2.6 GHz 1.4 GHz
Overclocked clock speed (Air) 2.72 GHz 2.21 GHz

power consumption

TDP 65W 59W
Annual home energy cost 27.64 $/year 14.21 $/year
Annual commercial energy cost 66.84 $/year 51.68 $/year
Performance per watt 1.64 pt/W 0.41 pt/W
Typical power consumption 70.8W 47.94W
Intel Pentium G620
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AMD Sempron 2500+
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