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Differences What are the advantages of each

Front view of Intel Xeon E3-1281 v3

Reasons to consider the
Intel Xeon E3-1281 v3

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Higher clock speed 3.7 GHz vs 3.6 GHz Around 5% higher clock speed
Front view of Intel Xeon E3-1271 v3

Reasons to consider the
Intel Xeon E3-1271 v3

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Higher turbo clock speed 4 GHz vs 3.9 GHz Around 5% higher turbo clock speed

Benchmarks Real world tests of Xeon E3-1281 v3 vs E3-1271 v3

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1281 v3  vs
E3-1271 v3 
Clock speed 3.7 GHz 3.6 GHz
Turbo clock speed 3.9 GHz 4 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s

details

Xeon E3-1281 v3  vs
E3-1271 v3 
Architecture x86-64 x86-64
Threads 8 8
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

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

power consumption

TDP 82W 80W
Annual home energy cost 19.75 $/year 19.27 $/year
Annual commercial energy cost 71.83 $/year 70.08 $/year
Performance per watt 4.14 pt/W 3.4 pt/W
Typical power consumption 66.63W 65W

bus

Architecture DMI DMI 2.0
Number of links 0 0
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Xeon E3-1281 v3
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Intel Xeon E3-1271 v3
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