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Differences What are the advantages of each

Front view of Intel Xeon E5-2689

Reasons to consider the
Intel Xeon E5-2689

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Much more l3 cache 20 MB vs 15 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly higher clock speed 2.6 GHz vs 2.4 GHz Around 10% higher clock speed
More threads 16 vs 12 4 more threads
Front view of Intel Xeon E5-2620 v3

Reasons to consider the
Intel Xeon E5-2620 v3

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Significantly lower typical power consumption 69.06W vs 93.44W More than 25% lower typical power consumption
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly lower annual commercial energy cost 74.46 $/year vs 100.74 $/year More than 25% lower annual commercial energy cost
Significantly lower annual home energy cost 20.48 $/year vs 27.7 $/year More than 25% lower annual home energy cost
Newer Jul, 2014 vs Mar, 2012 Release date over 2 years later

Benchmarks Real world tests of Xeon E5-2689 vs E5-2620 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 E5-2689
2,360,000 MB/s
Xeon E5-2620 v3
2,750,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2689  vs
E5-2620 v3 
Clock speed 2.6 GHz 2.4 GHz
Cores Octa core Hexa core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

details

Xeon E5-2689  vs
E5-2620 v3 
Threads 16 12
L3 cache 20 MB 15 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 2 2

power consumption

TDP 115W 85W
Annual home energy cost 27.7 $/year 20.48 $/year
Annual commercial energy cost 100.74 $/year 74.46 $/year
Performance per watt 10.97 pt/W 12.6 pt/W
Typical power consumption 93.44W 69.06W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 64,000 MB/s 64,000 MB/s
Transfer rate 8,000 MT/s 8,000 MT/s
Clock speed 4,000 MHz 4,000 MHz
Intel Xeon E5-2689
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Intel Xeon E5-2620 v3
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