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Differences What are the advantages of each

Front view of Intel Xeon E5-2650L

Reasons to consider the
Intel Xeon E5-2650L

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Much higher turbo clock speed 2.3 GHz vs 0 GHz Compared to all cpus, 2.3 GHz turbo clock speed is just OK
Much 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
More threads 16 vs 12 4 more threads
Much more l3 cache per core 2.5 MB/core vs 1 MB/core 2.5x more l3 cache per core
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 56.88W vs 69.06W Around 20% lower typical power consumption
Lower annual home energy cost 16.86 $/year vs 20.48 $/year Around 20% lower annual home energy cost
Lower annual commercial energy cost 61.32 $/year vs 74.46 $/year Around 20% lower annual commercial energy cost
Newer Mar, 2012 vs Feb, 2011 Release date over 1 years later
Front view of AMD Opteron 6166 HE

Reasons to consider the
AMD Opteron 6166 HE

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Much more l2 cache 6 MB vs 2 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration

Features Key features of the Xeon E5-2650L  vs Opteron 6166 HE 

clock speed

Xeon E5-2650L
1.8 GHz
Opteron 6166 HE
1.8 GHz

turbo clock speed

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon E5-2650L  vs
Opteron 6166 HE 
Clock speed 1.8 GHz 1.8 GHz
Turbo clock speed 2.3 GHz 0 GHz
Cores Octa core Duodeca 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

power consumption

TDP 70W 85W
Annual home energy cost 16.86 $/year 20.48 $/year
Annual commercial energy cost 61.32 $/year 74.46 $/year
Typical power consumption 56.88W 69.06W

bus

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

details

Xeon E5-2650L  vs
Opteron 6166 HE 
Threads 16 12
L2 cache 2 MB 6 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 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 4
Clock multiplier 23 9
Voltage range 0.6 - 1.35V 1.07 - UnknownV
Operating temperature Unknown - 72°C Unknown - 55°C

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Intel Xeon E5-2650L
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AMD Opteron 6166 HE
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