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Differences What are the advantages of each

Front view of Intel Xeon E3-1505L v5

Reasons to consider the
Intel Xeon E3-1505L v5

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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 20.31W vs 36.56W Around 45% lower typical power consumption
Significantly better performance per watt 9.45 pt/W vs 4.75 pt/W Around 2x better performance per watt
Better overclocked clock speed (Air) 2.8 GHz vs 2.3 GHz More than 20% better overclocked clock speed (Air)
Newer Oct, 2015 vs Apr, 2013 Release date over 2 years later
Lower annual home energy cost 6.02 $/year vs 10.84 $/year Around 45% lower annual home energy cost
Lower annual commercial energy cost 21.9 $/year vs 39.42 $/year Around 45% lower annual commercial energy cost
Better overclocked clock speed (Water) 2.8 GHz vs 2.3 GHz More than 20% better overclocked clock speed (Water)
Front view of Intel Xeon E3-1268L v3

Reasons to consider the
Intel Xeon E3-1268L v3

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Higher turbo clock speed 3.3 GHz vs 2.8 GHz Around 20% higher turbo clock speed
Higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
Better PassMark (Single core) score 1,949 vs 1,631 Around 20% better PassMark (Single core) score

Benchmarks Real world tests of Xeon E3-1505L v5 vs E3-1268L v3

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1505L v5  vs
E3-1268L v3 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 2.8 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 25W 45W
Annual home energy cost 6.02 $/year 10.84 $/year
Annual commercial energy cost 21.9 $/year 39.42 $/year
Performance per watt 9.45 pt/W 4.75 pt/W
Typical power consumption 20.31W 36.56W

bus

Architecture FSB DMI
Number of links 1 0
Transfer rate 8,000 MT/s 5,000 MT/s

details

Xeon E3-1505L v5  vs
E3-1268L 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 14 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.8 GHz 2.3 GHz
Overclocked clock speed (Water) 2.8 GHz 2.3 GHz
Overclocked clock speed (Air) 2.8 GHz 2.3 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P530 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,000 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1600
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 65,536 MB 32,768 MB
Intel Xeon E3-1505L v5
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Intel Xeon E3-1268L v3
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