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Differences What are the advantages of each

Front view of Intel Xeon E3-1265L v4

Reasons to consider the
Intel Xeon E3-1265L v4

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher clock speed 2.3 GHz vs 2.1 GHz Around 10% higher clock speed
Front view of Intel Xeon E3-1240L v5

Reasons to consider the
Intel Xeon E3-1240L v5

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Better overclocked clock speed (Air) 3.1 GHz vs 2.3 GHz Around 35% better overclocked clock speed (Air)
Lower typical power consumption 20.31W vs 28.44W Around 30% lower typical power consumption
Better overclocked clock speed (Water) 3.1 GHz vs 2.3 GHz Around 35% better overclocked clock speed (Water)
Newer Oct, 2015 vs Apr, 2015 Release date 6 months later
Lower annual commercial energy cost 21.9 $/year vs 30.66 $/year Around 30% lower annual commercial energy cost
Lower annual home energy cost 6.02 $/year vs 8.43 $/year Around 30% lower annual home energy cost

Features Key features of the Xeon E3-1265L v4  vs E3-1240L v5 

clock speed

turbo clock speed

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Xeon E3-1265L v4  vs
E3-1240L v5 
Clock speed 2.3 GHz 2.1 GHz
Turbo clock speed 3.3 GHz 3.2 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 35W 25W
Annual home energy cost 8.43 $/year 6.02 $/year
Annual commercial energy cost 30.66 $/year 21.9 $/year
Typical power consumption 28.44W 20.31W

bus

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

details

Xeon E3-1265L v4  vs
E3-1240L v5 
Architecture x86-64 x86-64
Threads 8 8
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.3 GHz 3.1 GHz
Overclocked clock speed (Water) 2.3 GHz 3.1 GHz
Overclocked clock speed (Air) 2.3 GHz 3.1 GHz

integrated graphics

GPU GPU None
Label Intel® Iris™ Pro Graphics P6300 N/A
Number of displays supported 3 N/A
GPU clock speed 300 MHz N/A
Turbo clock speed 1,050 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR3L-1333
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 12,800 MB/s 12,800 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Xeon E3-1265L v4
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Intel Xeon E3-1240L v5
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