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Differences What are the advantages of each

Front view of Intel Xeon E5-2650L v3

Reasons to consider the
Intel Xeon E5-2650L v3

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More threads 24 vs 8 Three times as many threads
Supports more RAM 786,432 MB vs 32,768 MB Supports 24x more RAM
More cores 12 vs 4 Three times as many cores; run more applications at once
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly better overclocked clock speed (Water) 2.62 GHz vs 2.3 GHz Around 15% better overclocked clock speed (Water)
Front view of Intel Xeon E3-1265L v4

Reasons to consider the
Intel Xeon E3-1265L v4

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Much higher clock speed 2.3 GHz vs 1.8 GHz Around 30% higher clock speed
Much higher turbo clock speed 3.3 GHz vs 2.5 GHz More than 30% higher turbo clock speed
Much better performance per dollar 1.25 pt/$ vs 0.25 pt/$ Around 5x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly lower typical power consumption 28.44W vs 52.81W More than 45% 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
Better overclocked clock speed (Air) 2.3 GHz vs 2.12 GHz Around 10% better overclocked clock speed (Air)
Significantly lower annual commercial energy cost 30.66 $/year vs 56.94 $/year More than 45% lower annual commercial energy cost
Significantly lower annual home energy cost 8.43 $/year vs 15.66 $/year More than 45% lower annual home energy cost
Newer Apr, 2015 vs Jul, 2014 Release date 9 months later

Features Key features of the Xeon E5-2650L v3  vs E3-1265L v4 

clock speed

turbo clock speed

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Xeon E5-2650L v3  vs
E3-1265L v4 
Clock speed 1.8 GHz 2.3 GHz
Turbo clock speed 2.5 GHz 3.3 GHz
Cores Duodeca 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 35W
Annual home energy cost 15.66 $/year 8.43 $/year
Annual commercial energy cost 56.94 $/year 30.66 $/year
Performance per watt 5.12 pt/W 14.84 pt/W
Typical power consumption 52.81W 28.44W

bus

Architecture QPI DMI
Number of links 2 0
Transfer rate 9,600 MT/s 5,000 MT/s

details

Xeon E5-2650L v3  vs
E3-1265L v4 
Architecture x86-64 x86-64
Threads 24 8
Manufacture process 22 nm 14 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 2.12 GHz 2.3 GHz
Overclocked clock speed (Water) 2.62 GHz 2.3 GHz
Overclocked clock speed (Air) 2.12 GHz 2.3 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 12,800 MB/s
Maximum memory size 786,432 MB 32,768 MB
Intel Xeon E5-2650L v3
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Intel Xeon E3-1265L v4
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