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Differences What are the advantages of each

Front view of Intel Xeon E3-1265L v3

Reasons to consider the
Intel Xeon E3-1265L v3

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Much higher clock speed 2.5 GHz vs 2 GHz 25% higher clock speed
Much higher turbo clock speed 3.7 GHz vs 2.8 GHz More than 30% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Front view of Intel Xeon E3-1240L v3

Reasons to consider the
Intel Xeon E3-1240L v3

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Lower typical power consumption 20.31W vs 36.56W Around 45% lower typical power consumption
Lower annual commercial energy cost 21.9 $/year vs 39.42 $/year Around 45% lower annual commercial energy cost
Lower annual home energy cost 6.02 $/year vs 10.84 $/year Around 45% lower annual home energy cost
Newer May, 2014 vs Apr, 2013 Release date over 1 years later

Benchmarks Real world tests of Xeon E3-1265L v3 vs E3-1240L v3

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1265L v3  vs
E3-1240L v3 
Clock speed 2.5 GHz 2 GHz
Turbo clock speed 3.7 GHz 2.8 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 E3-1265L v3  vs
E3-1240L 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 None
Label Intel® HD Graphics N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,200 MHz N/A

power consumption

TDP 45W 25W
Annual home energy cost 10.84 $/year 6.02 $/year
Annual commercial energy cost 39.42 $/year 21.9 $/year
Performance per watt 5.17 pt/W 10.05 pt/W
Typical power consumption 36.56W 20.31W

bus

Architecture DMI DMI
Number of links 0 0
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Xeon E3-1265L v3
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Intel Xeon E3-1240L v3
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