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Differences What are the advantages of each

Front view of Intel Xeon E5-2697 v3

Reasons to consider the
Intel Xeon E5-2697 v3

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Much more l3 cache 35 MB vs 20 MB 75% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 28 vs 12 16 more threads
Better overclocked clock speed (Water) 3.55 GHz vs 3.4 GHz Around 5% better overclocked clock speed (Water)
Front view of Intel Xeon E5-2643 v3

Reasons to consider the
Intel Xeon E5-2643 v3

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Much higher clock speed 3.4 GHz vs 2.6 GHz More than 30% higher clock speed
Much better overclocked clock speed (Air) 3.84 GHz vs 3.29 GHz More than 15% better overclocked clock speed (Air)
Higher turbo clock speed 3.7 GHz vs 3.6 GHz Around 5% higher turbo clock speed
Significantly more l3 cache per core 3.33 MB/core vs 2.5 MB/core Around 35% more l3 cache per core
Lower typical power consumption 109.69W vs 117.81W More than 5% lower typical power consumption
Lower annual commercial energy cost 118.26 $/year vs 127.02 $/year More than 5% lower annual commercial energy cost
Lower annual home energy cost 32.52 $/year vs 34.93 $/year More than 5% lower annual home energy cost

Benchmarks Real world tests of Xeon E5-2697 v3 vs E5-2643 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 E5-2697 v3
3,040,000 MB/s
Xeon E5-2643 v3
3,275,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2697 v3  vs
E5-2643 v3 
Clock speed 2.6 GHz 3.4 GHz
Turbo clock speed 3.6 GHz 3.7 GHz
Cores Processing Cores Hexa core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
AES
AVX
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 145W 135W
Annual home energy cost 34.93 $/year 32.52 $/year
Annual commercial energy cost 127.02 $/year 118.26 $/year
Performance per watt 10.17 pt/W 10.54 pt/W
Typical power consumption 117.81W 109.69W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 76,800 MB/s 76,800 MB/s
Transfer rate 9,600 MT/s 9,600 MT/s
Clock speed 4,800 MHz 4,800 MHz

details

Xeon E5-2697 v3  vs
E5-2643 v3 
Architecture x86-64 x86-64
Threads 28 12
L3 cache 35 MB 20 MB
L3 cache per core 2.5 MB/core 3.33 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 2 2
Operating temperature Unknown - 76.7°C Unknown - 77.3°C

overclocking

Overclocked clock speed 3.29 GHz 3.84 GHz
Overclocked clock speed (Water) 3.55 GHz 3.4 GHz
Overclocked clock speed (Air) 3.29 GHz 3.84 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 6,400 MB/s
Maximum memory size 786,432 MB 786,432 MB
Intel Xeon E5-2697 v3
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Intel Xeon E5-2643 v3
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