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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 GHz More than 55% higher clock speed
Significantly higher turbo clock speed 3.9 GHz vs 3.3 GHz Around 20% higher turbo clock speed
Much better turbo clock speed 1,250 MHz vs 1,000 MHz 25% better turbo clock speed
More l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better overclocked clock speed (Air) 3.1 GHz vs 2 GHz More than 55% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.1 GHz vs 2 GHz More than 55% better overclocked clock speed (Water)
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of Intel Xeon E3-1278L v4

Reasons to consider the
Intel Xeon E3-1278L v4

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Much higher GPU clock speed 800 MHz vs 350 MHz More than 2.2x higher GPU clock speed
Lower typical power consumption 38.19W vs 52.81W Around 30% lower typical power consumption
Newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Apr, 2015 vs Apr, 2013 Release date over 2 years later
Lower annual commercial energy cost 41.17 $/year vs 56.94 $/year Around 30% lower annual commercial energy cost
Lower annual home energy cost 11.32 $/year vs 15.66 $/year Around 30% lower annual home energy cost

Features Key features of the Xeon E3-1285L v3  vs E3-1278L v4 

clock speed

turbo clock speed

L3 cache

gpu clock speed

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Xeon E3-1285L v3  vs
E3-1278L v4 
Clock speed 3.1 GHz 2 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
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 47W
Annual home energy cost 15.66 $/year 11.32 $/year
Annual commercial energy cost 56.94 $/year 41.17 $/year
Typical power consumption 52.81W 38.19W

bus

Architecture DMI DMI
Number of links 0 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Xeon E3-1285L v3  vs
E3-1278L v4 
Architecture x86-64 x86-64
Threads 8 8
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 22 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.1 GHz 2 GHz
Overclocked clock speed (Water) 3.1 GHz 2 GHz
Overclocked clock speed (Air) 3.1 GHz 2 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P4700 Intel® Iris™ Pro Graphics P6300
Number of displays supported 3 3
GPU clock speed 350 MHz 800 MHz
Turbo clock speed 1,250 MHz 1,000 MHz

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 12,800 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Xeon E3-1285L v3
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Intel Xeon E3-1278L v4
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