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Differences What are the advantages of each

Front view of Intel Xeon E5-4620 v2

Reasons to consider the
Intel Xeon E5-4620 v2

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Lower typical power consumption 77.19W vs 93.44W More than 15% 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
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Jan, 2014 vs Mar, 2012 Release date over 1 years later
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost
Front view of Intel Xeon E5-2689

Reasons to consider the
Intel Xeon E5-2689

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Much better performance per watt 10.97 pt/W vs 4.06 pt/W Around 2.8x better performance per watt

Benchmarks Real world tests of Xeon E5-4620 v2 vs E5-2689

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 E5-4620 v2
143,500 MB/s
Xeon E5-2689
2,360,000 MB/s

Specifications Full list of technical specs

summary

Xeon E5-4620 v2  vs
E5-2689 
Clock speed 2.6 GHz 2.6 GHz
Cores Octa core Octa 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
Supports dynamic frequency scaling Yes Yes

details

Xeon E5-4620 v2  vs
E5-2689 
Threads 16 16
L3 cache 20 MB 20 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 4 2

power consumption

TDP 95W 115W
Annual home energy cost 22.89 $/year 27.7 $/year
Annual commercial energy cost 83.22 $/year 100.74 $/year
Performance per watt 4.06 pt/W 10.97 pt/W
Typical power consumption 77.19W 93.44W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 57,600 MB/s 64,000 MB/s
Transfer rate 7,200 MT/s 8,000 MT/s
Clock speed 3,600 MHz 4,000 MHz
Intel Xeon E5-4620 v2
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Intel Xeon E5-2689
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