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Differences What are the advantages of each

Front view of Intel Xeon E5 2680 v2

Reasons to consider the
Intel Xeon E5 2680 v2

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Much more l3 cache 25 MB vs 8 MB Around 3.2x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 20 vs 6 14 more threads
Much higher Maximum operating temperature 82 °C vs 70.5 °C More than 15% higher Maximum operating temperature
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
Better overclocked clock speed (Air) 3.4 GHz vs 3.3 GHz Around 5% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 3.49 GHz vs 3.3 GHz More than 5% better overclocked clock speed (Water)
Newer Jul, 2013 vs Nov, 2011 Release date over 1 years later
Front view of AMD Opteron 4238

Reasons to consider the
AMD Opteron 4238

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Much more l2 cache 6 MB vs 2.5 MB Around 2.5x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 3.3 GHz vs 2.8 GHz Around 20% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Higher turbo clock speed 3.7 GHz vs 3.6 GHz Around 5% higher turbo clock speed
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost

Features Key features of the Xeon E5 2680 v2  vs Opteron 4238 

clock speed

Xeon E5 2680 v2
2.8 GHz
Opteron 4238
3.3 GHz

turbo clock speed

Xeon E5 2680 v2
3.6 GHz
Opteron 4238
3.7 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5 2680 v2
3.4 GHz
Opteron 4238
3.3 GHz

overclocked clock speed (water)

Xeon E5 2680 v2
3.49 GHz
Opteron 4238
3.3 GHz

Specifications Full list of technical specs

summary

Xeon E5 2680 v2  vs
Opteron 4238 
Clock speed 2.8 GHz 3.3 GHz
Turbo clock speed 3.6 GHz 3.7 GHz
Cores Deca core Hexa core
Socket type
LGA 2011
C32
Is unlocked No No

features

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

power consumption

TDP 115W 95W
Annual home energy cost 27.7 $/year 22.89 $/year
Annual commercial energy cost 100.74 $/year 83.22 $/year
Typical power consumption 93.44W 77.19W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
DDR3-800
DDR3

details

Xeon E5 2680 v2  vs
Opteron 4238 
Threads 20 6
L2 cache 2.5 MB 6 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 25 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
Clock multiplier 28 18
Operating temperature Unknown - 82°C Unknown - 70.5°C

overclocking

Overclocked clock speed 3.4 GHz 3.3 GHz
Overclocked clock speed (Water) 3.49 GHz 3.3 GHz
Overclocked clock speed (Air) 3.4 GHz 3.3 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 8,000 MT/s 6,400 MT/s
Clock speed 4,000 MHz 3,200 MHz
Intel Xeon E5 2680 v2
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AMD Opteron 4238
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