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Differences What are the advantages of each

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
Higher clock speed 1.66 GHz vs 1.33 GHz Around 25% higher clock speed
Better overclocked clock speed (Air) 1.9 GHz vs 1.33 GHz Around 45% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 1.67 GHz vs 1.33 GHz Around 25% better overclocked clock speed (Water)
Front view of Intel Atom E3805

Reasons to consider the
Intel Atom E3805

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
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
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Newer Oct, 2014 vs Jan, 2010 Release date over 4 years later
More cores 2 vs 1 Twice as many cores; run more applications at once

Features Key features of the Atom N450  vs E3805 

clock speed

Atom N450
1.66 GHz
Atom E3805
1.33 GHz

L2 cache

Atom N450
0.5 MB
Atom E3805
1 MB

overclocked clock speed (air)

Atom N450
1.9 GHz
Atom E3805
1.33 GHz

overclocked clock speed (water)

Atom N450
1.67 GHz
Atom E3805
1.33 GHz

TDP

Specifications Full list of technical specs

summary

Atom N450  vs
E3805 
Clock speed 1.66 GHz 1.33 GHz
Cores Single core Dual core

features

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

power consumption

TDP 5.5W 3W
Annual home energy cost 1.32 $/year 0.72 $/year
Annual commercial energy cost 4.82 $/year 2.63 $/year
Typical power consumption 4.47W 2.44W

bus

Architecture DMI FSB
Number of links 1 1

details

Atom N450  vs
E3805 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 0.5 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 1 1

overclocking

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

integrated graphics

GPU GPU None
Label Integrated N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR2-667
DDR2
Channels Single Channel Single Channel
Maximum bandwidth 5,333.33 MB/s 6,400 MB/s
Maximum memory size 2,048 MB 8,192 MB
Intel Atom N450
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Intel Atom E3805
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