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Differences What are the advantages of each

Front view of Intel Core i3 2120

Reasons to consider the
Intel Core i3 2120

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Much higher clock speed 3.3 GHz vs 1.7 GHz Around 95% higher clock speed
Is hyperthreaded Yes vs No Somewhat common; Maximizes usage of each CPU core
Significantly more l3 cache per core 1.5 MB/core vs 0.25 MB/core 6x more l3 cache per core
Slightly more l3 cache 3 MB vs 0.5 MB 6x more l3 cache; more data can be stored in the l3 cache for quick access later
Front view of AMD E2 1800

Reasons to consider the
AMD E2 1800

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Much higher Maximum Operating Temperature 100 °C vs 69.1 °C Around 45% higher Maximum Operating Temperature
Lower typical power consumption 14.63W vs 52.81W 3.6x lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Marginally newer Jun, 2012 vs Jan, 2011 Release date over 1 years later
Lower annual commercial energy cost 15.77 $/year vs 56.94 $/year 3.6x lower annual commercial energy cost
Lower annual home energy cost 4.34 $/year vs 15.66 $/year 3.6x lower annual home energy cost

Features Key features of the Core i3 2120  vs E2 1800 

clock speed

Core i3 2120
3.3 GHz
E2 1800
1.7 GHz

L2 cache

Core i3 2120
0.5 MB
E2 1800
1 MB

L3 cache

E2 1800
0.5 MB

Specifications Full list of technical specs

summary

Core i3 2120  vs
E2 1800 
Clock speed 3.3 GHz 1.7 GHz
Cores Dual core Dual core
Is unlocked No No
Is hyperthreaded Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction-set-extensions
MMX
SSE
SSE4.2
AVX
SSE3
SSE2
Supplemental SSE3
SSE4.1
SSE4
SSE4a
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 18W
Annual home energy cost 15.66 $/year 4.34 $/year
Annual commercial energy cost 56.94 $/year 15.77 $/year
Performance per watt 8.79 pt/W 8.28 pt/W
Typical power consumption 52.81W 14.63W

details

Core i3 2120  vs
E2 1800 
Threads 4 2
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB 0.5 MB
L3 cache per core 1.5 MB/core 0.25 MB/core
Manufacture process 32 nms 32 nms
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 100°C

gpu

GPU GPU GPU
Label Intel® HD Graphics 2000 Radeon™ HD 7340
Intel Core i3 2120
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AMD E2 1800
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