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Differences What are the advantages of each

Front view of Intel Xeon E3-1246 v3

Reasons to consider the
Intel Xeon E3-1246 v3

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Much higher clock speed 3.5 GHz vs 2.4 GHz More than 45% higher clock speed
Much better PassMark score 9,993 vs 3,162 Around 3.2x better PassMark score
Much better PassMark (Single core) score 2,261 vs 513 Around 4.5x better PassMark (Single core) 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
Much better performance per watt 15.17 pt/W vs 4.02 pt/W More than 3.8x better performance per watt
Much better performance per dollar 4.47 pt/$ vs 0.39 pt/$ More than 11.5x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 3.78 GHz vs 2.4 GHz More than 55% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.7 GHz vs 2.4 GHz Around 55% better overclocked clock speed (Water)
Newer Apr, 2014 vs Jul, 2013 Release date 9 months later
Front view of Intel Atom C2758

Reasons to consider the
Intel Atom C2758

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More cores 8 vs 4 Twice as many cores; run more applications at once
Much lower typical power consumption 16.25W vs 68.25W 4.2x lower typical power consumption
Supports more RAM 65,536 MB vs 32,768 MB Supports 2x more RAM
Much lower annual commercial energy cost 17.52 $/year vs 73.58 $/year 4.2x lower annual commercial energy cost
Much lower annual home energy cost 4.82 $/year vs 20.24 $/year 4.2x lower annual home energy cost

Benchmarks Real world tests of Xeon E3-1246 v3 vs Atom C2758

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

Xeon E3-1246 v3
4,510,000 MB/s
Atom C2758
52,100 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1246 v3  vs
Atom C2758 
Clock speed 3.5 GHz 2.4 GHz
Cores Quad 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
AVX 2.0
Supports dynamic frequency scaling Yes No

power consumption

TDP 84W 20W
Annual home energy cost 20.24 $/year 4.82 $/year
Annual commercial energy cost 73.58 $/year 17.52 $/year
Performance per watt 15.17 pt/W 4.02 pt/W
Typical power consumption 68.25W 16.25W

bus

Architecture DMI 2.0 FSB
Number of links 0 1

details

Xeon E3-1246 v3  vs
Atom C2758 
Architecture x86-64 x86-64
Threads 8 8
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.78 GHz 2.4 GHz
Overclocked clock speed (Water) 3.7 GHz 2.4 GHz
Overclocked clock speed (Air) 3.78 GHz 2.4 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics P4600 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,200 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Xeon E3-1246 v3
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Intel Atom C2758
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