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Differences What are the advantages of each

Front view of Intel Xeon E3-1285L v3

Reasons to consider the
Intel Xeon E3-1285L v3

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Much higher clock speed 3.1 GHz vs 2.7 GHz Around 15% higher clock speed
Significantly higher turbo clock speed 3.9 GHz vs 3.3 GHz Around 20% higher turbo clock speed
Front view of Intel Xeon E3-1275L v3

Reasons to consider the
Intel Xeon E3-1275L v3

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Much better performance per watt 5.33 pt/W vs 3.35 pt/W Around 60% better performance per watt
Lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost
Lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Newer May, 2014 vs Apr, 2013 Release date over 1 years later

Benchmarks Real world tests of Xeon E3-1285L v3 vs E3-1275L v3

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1285L v3  vs
E3-1275L v3 
Clock speed 3.1 GHz 2.7 GHz
Turbo clock speed 3.9 GHz 3.3 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 E3-1285L v3  vs
E3-1275L v3 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
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 Graphics P4700 Intel® HD (Haswell)

power consumption

TDP 65W 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 3.35 pt/W 5.33 pt/W
Typical power consumption 52.81W 36.56W

bus

Architecture DMI DMI
Number of links 0 0
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Xeon E3-1285L v3
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Intel Xeon E3-1275L v3
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