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Differences What are the advantages of each

Front view of Intel Xeon E5-2603 v3

Reasons to consider the
Intel Xeon E5-2603 v3

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Much more l3 cache 15 MB vs 8 MB Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l3 cache per core 2.5 MB/core vs 1.33 MB/core Around 90% more l3 cache per core
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 69.06W vs 77.19W More than 10% lower typical power consumption
Newer Jul, 2014 vs Nov, 2011 Release date over 2 years later
Lower annual commercial energy cost 74.46 $/year vs 83.22 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 20.48 $/year vs 22.89 $/year More than 10% lower annual home energy cost
Front view of AMD Opteron 4226

Reasons to consider the
AMD Opteron 4226

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Much higher clock speed 2.7 GHz vs 1.6 GHz Around 70% higher clock speed
Much better overclocked clock speed (Air) 2.7 GHz vs 1.68 GHz More than 60% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 2.7 GHz vs 1.6 GHz Around 70% better overclocked clock speed (Water)

Features Key features of the Xeon E5-2603 v3  vs Opteron 4226 

clock speed

Xeon E5-2603 v3
1.6 GHz
Opteron 4226
2.7 GHz

L3 cache

overclocked clock speed (air)

Xeon E5-2603 v3
1.68 GHz
Opteron 4226
2.7 GHz

overclocked clock speed (water)

Xeon E5-2603 v3
1.6 GHz
Opteron 4226
2.7 GHz

Specifications Full list of technical specs

summary

Xeon E5-2603 v3  vs
Opteron 4226 
Clock speed 1.6 GHz 2.7 GHz
Cores Hexa core Hexa core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
Supplemental SSE3
AES
AVX 2.0

power consumption

TDP 85W 95W
Annual home energy cost 20.48 $/year 22.89 $/year
Annual commercial energy cost 74.46 $/year 83.22 $/year
Typical power consumption 69.06W 77.19W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR4-1600

details

Xeon E5-2603 v3  vs
Opteron 4226 
Threads 6 6
L3 cache 15 MB 8 MB
L3 cache per core 2.5 MB/core 1.33 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 2 2
Operating temperature Unknown - 72.8°C Unknown - 70.5°C

overclocking

Overclocked clock speed 1.68 GHz 2.7 GHz
Overclocked clock speed (Water) 1.6 GHz 2.7 GHz
Overclocked clock speed (Air) 1.68 GHz 2.7 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

bus

Architecture QPI HyperTransport 3.0
Number of links 2 2
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon E5-2603 v3
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AMD Opteron 4226
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