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Differences What are the advantages of each

Front view of Intel Xeon E5-2670

Reasons to consider the
Intel Xeon E5-2670

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Much more l3 cache per core 2.5 MB/core vs 0.98 MB/core More than 2.5x more l3 cache per core
Much higher Maximum operating temperature 80 °C vs 69 °C More than 15% higher Maximum operating temperature
Higher clock speed 2.6 GHz vs 2.4 GHz Around 10% higher clock speed
Front view of AMD Opteron 6278

Reasons to consider the
AMD Opteron 6278

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More cores 16 vs 8 Twice as many cores; run more applications at once
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Newer Jun, 2012 vs Mar, 2012 Release date 3 months later
Better overclocked clock speed (Air) 3.3 GHz vs 3.14 GHz More than 5% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 3.3 GHz vs 3.13 GHz More than 5% better overclocked clock speed (Water)

Features Key features of the Xeon E5-2670  vs Opteron 6278 

clock speed

Xeon E5-2670
2.6 GHz
Opteron 6278
2.4 GHz

turbo clock speed

Xeon E5-2670
3.3 GHz
Opteron 6278
3.3 GHz

L2 cache

L3 cache

Xeon E5-2670
20 MB
Opteron 6278
15.63 MB

overclocked clock speed (air)

Xeon E5-2670
3.14 GHz
Opteron 6278
3.3 GHz

overclocked clock speed (water)

Xeon E5-2670
3.13 GHz
Opteron 6278
3.3 GHz

Specifications Full list of technical specs

summary

Xeon E5-2670  vs
Opteron 6278 
Clock speed 2.6 GHz 2.4 GHz
Turbo clock speed 3.3 GHz 3.3 GHz
Cores Octa core 16 core
Socket type
LGA 2011
G34

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 115W
Annual home energy cost 27.7 $/year 27.7 $/year
Annual commercial energy cost 100.74 $/year 100.74 $/year
Typical power consumption 93.44W 93.44W

memory controller

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

details

Xeon E5-2670  vs
Opteron 6278 
Threads 16 16
L2 cache 2 MB 16 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 20 MB 15.63 MB
L3 cache per core 2.5 MB/core 0.98 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 4
Clock multiplier 33 12
Operating temperature Unknown - 80°C Unknown - 69°C

overclocking

Overclocked clock speed 3.14 GHz 3.3 GHz
Overclocked clock speed (Water) 3.13 GHz 3.3 GHz
Overclocked clock speed (Air) 3.14 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 4
Transfer rate 8,000 MT/s 6,400 MT/s
Clock speed 4,000 MHz 3,200 MHz
Intel Xeon E5-2670
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AMD Opteron 6278
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