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Differences What are the advantages of each

Front view of Intel Core i3 2100

Reasons to consider the
Intel Core i3 2100

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Much higher clock speed 3.1 GHz vs 1.86 GHz More than 65% higher clock speed
Much better geekbench 2 (32-bit) score 4,738 vs 1,037 More than 4.5x better geekbench 2 (32-bit) score
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much better PassMark (Single core) score 1,583 vs 285 More than 5.5x better PassMark (Single core) score
Much better geekbench 3 Multi-Core score 4,786 vs 1,082 Around 4.5x better geekbench 3 Multi-Core score
Significantly higher GPU clock speed 850 MHz vs 640 MHz Around 35% higher GPU clock speed
Much better overclocked clock speed (Air) 3.23 GHz vs 1.87 GHz Around 75% better overclocked clock speed (Air)
Significantly better performance per dollar 1.14 pt/$ vs 0.73 pt/$ More than 55% better performance per dollar
Much better overclocked clock speed (Water) 3.23 GHz vs 1.87 GHz Around 75% better overclocked clock speed (Water)
Front view of Intel Atom N2800

Reasons to consider the
Intel Atom N2800

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Much lower typical power consumption 5.28W vs 98.28W 18.6x lower typical power consumption
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher Maximum operating temperature 100 °C vs 69.1 °C Around 45% higher Maximum operating temperature
Significantly better performance per watt 5.28 pt/W vs 1.41 pt/W More than 3.8x better performance per watt
Much lower annual home energy cost 1.57 $/year vs 37.88 $/year 24.2x lower annual home energy cost
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual commercial energy cost 5.69 $/year vs 93.47 $/year 16.4x lower annual commercial energy cost
Newer Dec, 2011 vs Jan, 2011 Release date a year later

Benchmarks Real world tests of Core i3 2100 vs Atom N2800

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i3 2100
4,786
Atom N2800
1,082

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i3 2100
153,100 MB/s
Atom N2800
29,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i3 2100
4,738
Atom N2800
1,037

GeekBench

Core i3 2100
7,901
Atom N2800
1,413

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 2100  vs
Atom N2800 
Clock speed 3.1 GHz 1.86 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes No
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 6.5W
Annual home energy cost 37.88 $/year 1.57 $/year
Annual commercial energy cost 93.47 $/year 5.69 $/year
Performance per watt 1.41 pt/W 5.28 pt/W
Typical power consumption 98.28W 5.28W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 2,500 MT/s

details

Core i3 2100  vs
Atom N2800 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 100°C

overclocking

Overclocked clock speed 3.23 GHz 1.87 GHz
Overclocked clock speed (Water) 3.23 GHz 1.87 GHz
Overclocked clock speed (Air) 3.23 GHz 1.87 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 2000 Integrated
GPU clock speed 850 MHz 640 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Single Channel
Maximum bandwidth 21,333.32 MB/s 6,400 MB/s
Maximum memory size 32,768 MB 4,997.12 MB
Intel Core i3 2100
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Intel Atom N2800
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