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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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Significantly higher clock speed 3.3 GHz vs 2.13 GHz Around 55% higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better overclocked clock speed (Air) 3.42 GHz vs 2.13 GHz More than 60% better overclocked clock speed (Air)
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Significantly better overclocked clock speed (Water) 3.37 GHz vs 2.13 GHz Around 60% better overclocked clock speed (Water)
Newer Jan, 2011 vs Apr, 2010 Release date 9 months later
Front view of Intel Atom Z560

Reasons to consider the
Intel Atom Z560

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Much lower typical power consumption 2.03W vs 52.81W 26x lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 0.6 $/year vs 15.66 $/year 26x lower annual home energy cost
Much lower annual commercial energy cost 2.19 $/year vs 56.94 $/year 26x lower annual commercial energy cost

Features Key features of the Core i3 2120  vs Atom Z560 

clock speed

Core i3 2120
3.3 GHz
Atom Z560
2.13 GHz

L2 cache

Core i3 2120
0.5 MB
Atom Z560
0.5 MB

overclocked clock speed (air)

Core i3 2120
3.42 GHz
Atom Z560
2.13 GHz

overclocked clock speed (water)

Core i3 2120
3.37 GHz
Atom Z560
2.13 GHz

TDP

Specifications Full list of technical specs

summary

Core i3 2120  vs
Atom Z560 
Clock speed 3.3 GHz 2.13 GHz
Cores Dual core Single core
Socket type
LGA 1155
441

features

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

power consumption

TDP 65W 2.5W
Annual home energy cost 15.66 $/year 0.6 $/year
Annual commercial energy cost 56.94 $/year 2.19 $/year
Typical power consumption 52.81W 2.03W

details

Core i3 2120  vs
Atom Z560 
Architecture x86-64 x86
Threads 4 2
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1
Clock multiplier 33 16

overclocking

Overclocked clock speed 3.42 GHz 2.13 GHz
Overclocked clock speed (Water) 3.37 GHz 2.13 GHz
Overclocked clock speed (Air) 3.42 GHz 2.13 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 2000 N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A

bus

Architecture DMI FSB
Number of links 1 1
Intel Core i3 2120
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Intel Atom Z560
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