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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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Much more l3 cache 30 MB vs 8 MB 3.8x more l3 cache; more data can be stored in the l3 cache for quick access later
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
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Better overclocked clock speed (Water) 2.62 GHz vs 2.5 GHz Around 5% better overclocked clock speed (Water)
Newer Jul, 2014 vs Apr, 2013 Release date over 1 years later
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 1.8 GHz Around 40% higher clock speed
Much higher turbo clock speed 3.7 GHz vs 2.5 GHz Around 50% higher turbo clock speed
Much better PassMark (Single core) score 2,074 vs 1,371 More than 50% better PassMark (Single core) score
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 2.5 GHz vs 2.12 GHz Around 20% better overclocked clock speed (Air)
Lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost
Lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost

Benchmarks Real world tests of Xeon E5-2650L v3 vs E3-1265L v3

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2650L v3
1,650 MB/s
Xeon E3-1265L v3
1,345 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2650L v3  vs
E3-1265L v3 
Clock speed 1.8 GHz 2.5 GHz
Turbo clock speed 2.5 GHz 3.7 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 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 5.12 pt/W 5.17 pt/W
Typical power consumption 52.81W 36.56W

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 v3 
Architecture x86-64 x86-64
Threads 24 8
L3 cache 30 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 2.12 GHz 2.5 GHz
Overclocked clock speed (Water) 2.62 GHz 2.5 GHz
Overclocked clock speed (Air) 2.12 GHz 2.5 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
DDR
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 25,600 MB/s
Maximum memory size 786,432 MB 32,768 MB
Intel Xeon E5-2650L v3
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Intel Xeon E3-1265L v3
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