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Differences What are the advantages of each

Front view of Intel Pentium 738

Reasons to consider the
Intel Pentium 738

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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
Front view of Intel Atom D2550

Reasons to consider the
Intel Atom D2550

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

Features Key features of the Pentium 738  vs Atom D2550 

clock speed

Pentium 738
1.4 GHz
Atom D2550
1.86 GHz

L2 cache

overclocked clock speed (air)

Pentium 738
1.64 GHz
Atom D2550
1.87 GHz

overclocked clock speed (water)

Pentium 738
1.4 GHz
Atom D2550
1.87 GHz

TDP

Specifications Full list of technical specs

summary

Pentium 738  vs
Atom D2550 
Clock speed 1.4 GHz 1.86 GHz
Cores Single core Dual core

features

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

power consumption

TDP 7.5W 10W
Annual home energy cost 1.81 $/year 2.41 $/year
Typical power consumption 6.09W 8.13W

bus

Architecture FSB DMI
Number of links 1 1

details

Pentium 738  vs
Atom D2550 
Architecture x86 x86-64
Threads 1 4
L2 cache 2 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 90 nm 32 nm
Max CPUs 1 1
Voltage range 0.99 - 1.12V 0.91 - 1.21V

overclocking

Overclocked clock speed 1.64 GHz 1.87 GHz
Overclocked clock speed (Water) 1.4 GHz 1.87 GHz
Overclocked clock speed (Air) 1.64 GHz 1.87 GHz

integrated graphics

GPU None GPU
Label N/A Integrated
Number of displays supported N/A 2
GPU clock speed N/A 640 MHz

memory controller

Memory controller Built-in Built-in
Supports ECC No No
Intel Pentium 738
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Intel Atom D2550
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