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Differences What are the advantages of each

Front view of Intel Pentium B915C

Reasons to consider the
Intel Pentium B915C

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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
Slightly lower typical power consumption 12.19W vs 16.25W 25% lower typical power consumption
Slightly lower annual home energy cost 3.61 $/year vs 4.82 $/year Around 25% lower annual home energy cost
Slightly lower annual commercial energy cost 13.14 $/year vs 17.52 $/year Around 25% lower annual commercial energy cost
Front view of Intel Atom C2758

Reasons to consider the
Intel Atom C2758

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Significantly higher clock speed 2.4 GHz vs 1.5 GHz 60% higher clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 8 vs 2 6 more cores; run more applications at once
Significantly better overclocked clock speed (Air) 2.4 GHz vs 1.5 GHz 60% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Newer Jul, 2013 vs Apr, 2012 Release date over 1 years later
Significantly better overclocked clock speed (Water) 2.4 GHz vs 1.5 GHz 60% better overclocked clock speed (Water)

Features Key features of the Pentium B915C  vs Atom C2758 

clock speed

Pentium B915C
1.5 GHz
Atom C2758
2.4 GHz

overclocked clock speed (air)

Pentium B915C
1.5 GHz
Atom C2758
2.4 GHz

overclocked clock speed (water)

Pentium B915C
1.5 GHz
Atom C2758
2.4 GHz

Specifications Full list of technical specs

summary

Pentium B915C  vs
Atom C2758 
Clock speed 1.5 GHz 2.4 GHz
Cores Dual core Octa core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes No

power consumption

TDP 15W 20W
Annual home energy cost 3.61 $/year 4.82 $/year
Annual commercial energy cost 13.14 $/year 17.52 $/year
Typical power consumption 12.19W 16.25W

bus

Architecture DMI FSB
Number of links 1 1

details

Pentium B915C  vs
Atom C2758 
Architecture x86-64 x86-64
Threads 4 8
Manufacture process 32 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.5 GHz 2.4 GHz
Overclocked clock speed (Water) 1.5 GHz 2.4 GHz
Overclocked clock speed (Air) 1.5 GHz 2.4 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 21,333.32 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Pentium B915C
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Intel Atom C2758
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