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Differences What are the advantages of each

Front view of Intel x5-Z8350

Reasons to consider the
Intel x5-Z8350

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Much more l2 cache 2 MB vs 0.5 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
More cores 4 vs 1 3 more cores; run more applications at once
Newer Jan, 2016 vs Jun, 2010 Release date over 5 years later
More threads 4 vs 2 Twice as many threads
Front view of Intel Atom N455

Reasons to consider the
Intel Atom N455

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Much better 3DMark06 CPU score 490 vs 22.5 More than 21.8x better 3DMark06 CPU score
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Higher clock speed 1.66 GHz vs 1.44 GHz More than 15% higher clock speed
Slightly better overclocked clock speed (Air) 1.88 GHz vs 1.71 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 1.67 GHz vs 1.44 GHz More than 15% better overclocked clock speed (Water)

Benchmarks Real world tests of x5-Z8350 vs Atom N455

3D Mark 06 (CPU)

x5-Z8350
22.5
Atom N455
490

PassMark Data courtesy Passmark

x5-Z8350
1,149
Atom N455
287

PassMark (Single Core)

Specifications Full list of technical specs

summary

x5-Z8350  vs
Atom N455 
Clock speed 1.44 GHz 1.66 GHz
Cores Quad core Single core

features

Has virtualization support Yes No
Instruction set extensions
SSE2
MMX
SSE3
SSE
Supplemental SSE3
AES
Supports dynamic frequency scaling No Yes

power consumption

Typical power consumption N/A 5.28W

bus

Architecture FSB DMI
Number of links 1 1

details

x5-Z8350  vs
Atom N455 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 2 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 14 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.71 GHz 1.88 GHz
Overclocked clock speed (Water) 1.44 GHz 1.67 GHz
Overclocked clock speed (Air) 1.71 GHz 1.88 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 400 Integrated
GPU clock speed 200 MHz 200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR2
Channels Single Channel Single Channel
Maximum bandwidth 6,400 MB/s 3,200 MB/s
Maximum memory size 2,048 MB 2,048 MB
Intel x5-Z8350
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Intel Atom N455
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