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Differences What are the advantages of each

Front view of Intel Xeon E5-2620 v3

Reasons to consider the
Intel Xeon E5-2620 v3

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Higher clock speed 2.4 GHz vs 2.3 GHz Around 5% higher clock speed
Much more l3 cache per core 2.5 MB/core vs 1 MB/core 2.5x more l3 cache per core
Significantly lower typical power consumption 69.06W vs 93.44W More than 25% lower typical power consumption
Much better overclocked clock speed (Air) 2.66 GHz vs 2.3 GHz More than 15% better overclocked clock speed (Air)
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Water) 2.87 GHz vs 2.3 GHz Around 25% better overclocked clock speed (Water)
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
Front view of AMD Opteron 6275

Reasons to consider the
AMD Opteron 6275

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More threads 16 vs 12 4 more threads
More l3 cache 16 MB vs 15 MB More than 5% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration

Features Key features of the Xeon E5-2620 v3  vs Opteron 6275 

clock speed

Xeon E5-2620 v3
2.4 GHz
Opteron 6275
2.3 GHz

L3 cache

overclocked clock speed (air)

Xeon E5-2620 v3
2.66 GHz
Opteron 6275
2.3 GHz

overclocked clock speed (water)

Xeon E5-2620 v3
2.87 GHz
Opteron 6275
2.3 GHz

Specifications Full list of technical specs

summary

Xeon E5-2620 v3  vs
Opteron 6275 
Clock speed 2.4 GHz 2.3 GHz
Cores Hexa core 16 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

bus

Architecture QPI HyperTransport 3.0
Transfer rate 8,000 MT/s 6,400 MT/s
Clock speed 4,000 MHz 3,200 MHz

details

Xeon E5-2620 v3  vs
Opteron 6275 
Threads 12 16
L3 cache 15 MB 16 MB
L3 cache per core 2.5 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 2 4

overclocking

Overclocked clock speed 2.66 GHz 2.3 GHz
Overclocked clock speed (Water) 2.87 GHz 2.3 GHz
Overclocked clock speed (Air) 2.66 GHz 2.3 GHz

power consumption

TDP 85W 115W
Annual home energy cost 20.48 $/year 27.7 $/year
Annual commercial energy cost 74.46 $/year 100.74 $/year
Typical power consumption 69.06W 93.44W
Intel Xeon E5-2620 v3
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AMD Opteron 6275
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