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Differences What are the advantages of each

Front view of Intel Xeon E5-2680

Reasons to consider the
Intel Xeon E5-2680

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l3 cache 20 MB vs 12 MB More than 65% more l3 cache; more data can be stored in the l3 cache for quick access later
Higher clock speed 2.7 GHz vs 2.3 GHz More than 15% higher clock speed
More threads 16 vs 8 Twice as many threads
Significantly more l3 cache per core 2.5 MB/core vs 1.5 MB/core More than 65% more l3 cache per core
Significantly better overclocked clock speed (Air) 3.14 GHz vs 2.3 GHz More than 35% better overclocked clock speed (Air)
Newer Mar, 2012 vs Mar, 2010 Release date over 1 years later
Significantly better overclocked clock speed (Water) 3.5 GHz vs 2.3 GHz More than 50% better overclocked clock speed (Water)
Front view of AMD Opteron 61QS

Reasons to consider the
AMD Opteron 61QS

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Much more l2 cache 4 MB vs 2 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Lower typical power consumption 93.44W vs 105.63W More than 10% lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Lower annual home energy cost 27.7 $/year vs 31.32 $/year More than 10% lower annual home energy cost
Lower annual commercial energy cost 100.74 $/year vs 113.88 $/year More than 10% lower annual commercial energy cost

Features Key features of the Xeon E5-2680  vs Opteron 61QS 

clock speed

Xeon E5-2680
2.7 GHz
Opteron 61QS
2.3 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5-2680
3.14 GHz
Opteron 61QS
2.3 GHz

overclocked clock speed (water)

Xeon E5-2680
3.5 GHz
Opteron 61QS
2.3 GHz

TDP

Specifications Full list of technical specs

summary

Xeon E5-2680  vs
Opteron 61QS 
Clock speed 2.7 GHz 2.3 GHz
Cores Octa core Octa core
Socket type
LGA 2011
G34

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
AES

bus

Architecture QPI HyperTransport 3.0
Clock speed 4,000 MHz 3,200 MHz

details

Xeon E5-2680  vs
Opteron 61QS 
Threads 16 8
L2 cache 2 MB 4 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 20 MB 12 MB
L3 cache per core 2.5 MB/core 1.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 4
Clock multiplier 35 11
Voltage range 0.6 - 1.35V 1 - UnknownV

overclocking

Overclocked clock speed 3.14 GHz 2.3 GHz
Overclocked clock speed (Water) 3.5 GHz 2.3 GHz
Overclocked clock speed (Air) 3.14 GHz 2.3 GHz

power consumption

TDP 130W 115W
Annual home energy cost 31.32 $/year 27.7 $/year
Annual commercial energy cost 113.88 $/year 100.74 $/year
Typical power consumption 105.63W 93.44W
Intel Xeon E5-2680
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AMD Opteron 61QS
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