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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 more l3 cache 3 MB vs 0 MB Compared to all cpus, 3 MB l3 cache is just OK
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 newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher clock speed 2.6 GHz vs 1.9 GHz More than 35% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better PassMark score 2,303 vs 433 More than 5.2x better PassMark score
Much better PassMark (Single core) score 1,326 vs 520 More than 2.5x 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 0.84 pt/W Around 95% better performance per watt
Much more l3 cache per core 1.5 MB/core vs 0 MB/core Compared to all cpus, 1.5 MB/core l3 cache per core is just OK
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Significantly higher Maximum operating temperature 69.1 °C vs 65 °C More than 5% higher Maximum operating temperature
Better overclocked clock speed (Water) 2.6 GHz vs 2.37 GHz Around 10% better overclocked clock speed (Water)
Front view of AMD Sempron 1100

Reasons to consider the
AMD Sempron 1100

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Much lower typical power consumption 36.56W vs 70.8W Around 50% lower typical power consumption
Much lower annual home energy cost 10.84 $/year vs 27.64 $/year 2.5x lower annual home energy cost
Better overclocked clock speed (Air) 2.8 GHz vs 2.72 GHz Around 5% better overclocked clock speed (Air)
Much lower annual commercial energy cost 39.42 $/year vs 66.84 $/year More than 40% lower annual commercial energy cost

Benchmarks Real world tests of Pentium G620 vs Sempron 1100

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium G620  vs
Sempron 1100 
Clock speed 2.6 GHz 1.9 GHz
Cores Dual core Single core
Socket type
LGA 1155
462
AM2

features

Has a NX bit Yes Yes
Has virtualization support Yes No
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A

details

Pentium G620  vs
Sempron 1100 
Architecture x86-64 x86-64
Threads 2 1
L2 cache 1 MB 0.25 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 3 MB 0 MB
L3 cache per core 1.5 MB/core 0 MB/core
Manufacture process 32 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 65°C

overclocking

Overclocked clock speed 2.72 GHz 2.8 GHz
Overclocked clock speed (Water) 2.6 GHz 2.37 GHz
PassMark (Overclocked) 1,014.8 817.6
Overclocked clock speed (Air) 2.72 GHz 2.8 GHz

power consumption

TDP 65W 45W
Annual home energy cost 27.64 $/year 10.84 $/year
Annual commercial energy cost 66.84 $/year 39.42 $/year
Performance per watt 1.64 pt/W 0.84 pt/W
Typical power consumption 70.8W 36.56W
Intel Pentium G620
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AMD Sempron 1100
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