CPUBoss Review Our evaluation of Z520 vs N450 among laptop CPUs (up to 15W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.3

CPUBoss Score

Combination of all six facets

Winner
Intel Atom Z520 

CPUBoss recommends the Intel Atom Z520  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Atom Z520

Reasons to consider the
Intel Atom Z520

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Front view of Intel Atom N450

Reasons to consider the
Intel Atom N450

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Benchmarks Real world tests of Atom Z520 vs N450

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Atom Z520
20,550 MB/s
Atom N450
25,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

Atom Z520
693
Atom N450
1,014

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Atom Z520  vs
N450 
Clock speed 1.33 GHz 1.66 GHz
Cores Single core Single core

features

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

power consumption

TDP 2W 5.5W
Annual home energy cost 0.48 $/year 1.32 $/year
Performance per watt 10.05 pt/W 4.63 pt/W
Typical power consumption 1.63W 4.47W

details

Atom Z520  vs
N450 
Architecture x86 x86-64
Threads 2 2
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Transistor count 47,000,000 123,000,000
Max CPUs 1 1
Clock multiplier 10 10
Voltage range 0.75 - 1.1V 0.8 - 1.18V

overclocking

Overclocked clock speed 1.6 GHz 1.9 GHz
Overclocked clock speed (Water) 1.33 GHz 1.67 GHz
Overclocked clock speed (Air) 1.6 GHz 1.9 GHz

integrated graphics

GPU None GPU
Label N/A Integrated

bus

Architecture FSB DMI
Number of links 1 1
Intel Atom Z520
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Intel Atom N450
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