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Differences What are the advantages of each

Front view of Intel Xeon E5-2640

Reasons to consider the
Intel Xeon E5-2640

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Much higher turbo clock speed 3 GHz vs 0 GHz Compared to all cpus, 3 GHz turbo clock speed is just OK
Much higher clock speed 2.5 GHz vs 2.2 GHz Around 15% higher clock speed
Significantly more l3 cache 15 MB vs 12 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 12 vs 8 4 more threads
Much better overclocked clock speed (Air) 2.9 GHz vs 2.21 GHz More than 30% better overclocked clock speed (Air)
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much 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 (Water) 2.5 GHz vs 2.2 GHz Around 15% better overclocked clock speed (Water)
Newer Mar, 2012 vs Feb, 2011 Release date over 1 years later
Front view of AMD Opteron 6132 HE

Reasons to consider the
AMD Opteron 6132 HE

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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
Significantly more l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Lower typical power consumption 69.06W vs 77.19W More than 10% lower typical power consumption
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

Features Key features of the Xeon E5-2640  vs Opteron 6132 HE 

clock speed

Xeon E5-2640
2.5 GHz
Opteron 6132 HE
2.2 GHz

turbo clock speed

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5-2640
2.9 GHz
Opteron 6132 HE
2.21 GHz

overclocked clock speed (water)

Xeon E5-2640
2.5 GHz
Opteron 6132 HE
2.2 GHz

Specifications Full list of technical specs

summary

Xeon E5-2640  vs
Opteron 6132 HE 
Clock speed 2.5 GHz 2.2 GHz
Turbo clock speed 3 GHz 0 GHz
Cores Hexa 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

power consumption

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3

details

Xeon E5-2640  vs
Opteron 6132 HE 
Threads 12 8
L2 cache 2 MB 4 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 15 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 30 11
Voltage range 0.6 - 1.35V 1 - UnknownV
Operating temperature Unknown - 73°C Unknown - 55°C

overclocking

Overclocked clock speed 2.9 GHz 2.21 GHz
Overclocked clock speed (Water) 2.5 GHz 2.2 GHz
Overclocked clock speed (Air) 2.9 GHz 2.21 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
Clock speed 3,600 MHz 3,200 MHz
Intel Xeon E5-2640
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AMD Opteron 6132 HE
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