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Differences What are the advantages of each

Front view of Intel Xeon E3-1270 v3

Reasons to consider the
Intel Xeon E3-1270 v3

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Much higher clock speed 3.5 GHz vs 2.3 GHz More than 50% higher clock speed
Much higher turbo clock speed 3.9 GHz vs 2.8 GHz Around 40% higher turbo clock speed
Much better overclocked clock speed (Air) 3.89 GHz vs 2.8 GHz Around 40% better overclocked clock speed (Air)
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 65W vs 80.44W Around 20% lower typical power consumption
Much better overclocked clock speed (Water) 3.5 GHz vs 2.8 GHz More than 25% better overclocked clock speed (Water)
Lower annual commercial energy cost 70.08 $/year vs 86.72 $/year Around 20% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 23.85 $/year Around 20% lower annual home energy cost
Front view of AMD Opteron 6338P

Reasons to consider the
AMD Opteron 6338P

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Much more l2 cache 12 MB vs 1 MB 12x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 12 vs 8 4 more threads
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
Newer Jan, 2014 vs Apr, 2013 Release date 9 months later

Features Key features of the Xeon E3-1270 v3  vs Opteron 6338P 

clock speed

Xeon E3-1270 v3
3.5 GHz
Opteron 6338P
2.3 GHz

turbo clock speed

Xeon E3-1270 v3
3.9 GHz
Opteron 6338P
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E3-1270 v3
3.89 GHz
Opteron 6338P
2.8 GHz

overclocked clock speed (water)

Xeon E3-1270 v3
3.5 GHz
Opteron 6338P
2.8 GHz

Specifications Full list of technical specs

summary

Xeon E3-1270 v3  vs
Opteron 6338P 
Clock speed 3.5 GHz 2.3 GHz
Turbo clock speed 3.9 GHz 2.8 GHz
Cores Quad core Dodeca core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
EM64T
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 99W
Annual home energy cost 19.27 $/year 23.85 $/year
Annual commercial energy cost 70.08 $/year 86.72 $/year
Typical power consumption 65W 80.44W

bus

Transfer rate 5,000 MT/s 6,400 MT/s

details

Xeon E3-1270 v3  vs
Opteron 6338P 
Architecture x86-64 x86-64
Threads 8 12
L2 cache 1 MB 12 MB
L3 cache 8 MB 16 MB
Manufacture process 22 nm 32 nm
Max CPUs 1 4

overclocking

Overclocked clock speed 3.89 GHz 2.8 GHz
Overclocked clock speed (Water) 3.5 GHz 2.8 GHz
Overclocked clock speed (Air) 3.89 GHz 2.8 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 51,200 MB/s
Intel Xeon E3-1270 v3
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AMD Opteron 6338P
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