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Differences What are the advantages of each

Front view of Intel Core i7 3770

Reasons to consider the
Intel Core i7 3770

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Much higher clock speed 3.4 GHz vs 1.33 GHz More than 2.5x higher clock speed
Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
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
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 better overclocked clock speed (Air) 4.03 GHz vs 1.33 GHz More than 3x better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More cores 4 vs 1 3 more cores; run more applications at once
More threads 8 vs 2 6 more threads
Newer Apr, 2012 vs Mar, 2009 Release date over 3 years later
Much better overclocked clock speed (Water) 4.32 GHz vs 1.33 GHz Around 3.2x better overclocked clock speed (Water)
Front view of Intel Atom Z520PT

Reasons to consider the
Intel Atom Z520PT

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Much lower typical power consumption 1.79W vs 62.56W 35x 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 0.53 $/year vs 18.55 $/year 35x lower annual home energy cost
Much lower annual commercial energy cost 1.93 $/year vs 67.45 $/year 35x lower annual commercial energy cost

Features Key features of the Core i7 3770  vs Atom Z520PT 

clock speed

Core i7 3770
3.4 GHz
Atom Z520PT
1.33 GHz

L2 cache

overclocked clock speed (air)

Core i7 3770
4.03 GHz
Atom Z520PT
1.33 GHz

overclocked clock speed (water)

Core i7 3770
4.32 GHz
Atom Z520PT
1.33 GHz

TDP

Specifications Full list of technical specs

summary

Core i7 3770  vs
Atom Z520PT 
Clock speed 3.4 GHz 1.33 GHz
Cores Quad core Single core
Socket type
LGA 1155
437

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
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 77W 2.2W
Annual home energy cost 18.55 $/year 0.53 $/year
Annual commercial energy cost 67.45 $/year 1.93 $/year
Typical power consumption 62.56W 1.79W

details

Core i7 3770  vs
Atom Z520PT 
Architecture x86-64 x86
Threads 8 2
L2 cache 1 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 22 nm 45 nm
Transistor count 1,300,000,000 47,000,000
Max CPUs 1 1
Clock multiplier 34 10

overclocking

Overclocked clock speed 4.03 GHz 1.33 GHz
Overclocked clock speed (Water) 4.32 GHz 1.33 GHz
Overclocked clock speed (Air) 4.03 GHz 1.33 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 4000 N/A
Latest DirectX 11.x N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,150 MHz N/A
3DMark06 5,339.9 N/A

bus

Architecture DMI FSB
Number of links 1 1
Intel Core i7 3770
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Intel Atom Z520PT
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