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Differences What are the advantages of each

Front view of Intel Xeon E3-1275L v3

Reasons to consider the
Intel Xeon E3-1275L v3

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Significantly lower typical power consumption 36.56W vs 68.25W More than 45% lower typical power consumption
Significantly lower annual commercial energy cost 39.42 $/year vs 73.58 $/year More than 45% lower annual commercial energy cost
Significantly lower annual home energy cost 10.84 $/year vs 20.24 $/year More than 45% lower annual home energy cost
Newer May, 2014 vs Apr, 2013 Release date over 1 years later
Front view of Intel Xeon E3-1275 v3

Reasons to consider the
Intel Xeon E3-1275 v3

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Much higher clock speed 3.5 GHz vs 2.7 GHz Around 30% higher clock speed
Significantly higher turbo clock speed 3.9 GHz vs 3.3 GHz Around 20% higher turbo clock speed
Much better performance per dollar 3.2 pt/$ vs 0.68 pt/$ Around 4.8x better performance per dollar

Benchmarks Real world tests of Xeon E3-1275L v3 vs E3-1275 v3

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 E3-1275L v3
4,160 MB/s
Xeon E3-1275 v3
4,185,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275L v3  vs
E3-1275 v3 
Clock speed 2.7 GHz 3.5 GHz
Turbo clock speed 3.3 GHz 3.9 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s

details

Xeon E3-1275L v3  vs
E3-1275 v3 
Architecture x86-64 x86-64
Threads 8 8
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

integrated graphics

GPU GPU GPU
Label Intel® HD (Haswell) Intel® HD Graphics P4600

power consumption

TDP 45W 84W
Annual home energy cost 10.84 $/year 20.24 $/year
Annual commercial energy cost 39.42 $/year 73.58 $/year
Performance per watt 5.33 pt/W 13.73 pt/W
Typical power consumption 36.56W 68.25W

bus

Architecture DMI DMI
Number of links 0 0
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Xeon E3-1275L v3
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Intel Xeon E3-1275 v3
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