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Differences What are the advantages of each

Front view of Intel Xeon E5-2667 v3

Reasons to consider the
Intel Xeon E5-2667 v3

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Much more l3 cache 20 MB vs 8 MB 2.5x more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more RAM 786,432 MB vs 32,768 MB Supports 24x more RAM
Much better PassMark score 16,101 vs 6,076 Around 2.8x better PassMark score
More threads 16 vs 4 12 more threads
More cores 8 vs 4 Twice as many cores; run more applications at once
Higher clock speed 3.2 GHz vs 3.1 GHz Around 5% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3.4 GHz More than 5% higher turbo clock speed
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Newer Jul, 2014 vs Apr, 2011 Release date over 3 years later
Better overclocked clock speed (Water) 3.2 GHz vs 3.1 GHz Around 5% better overclocked clock speed (Water)
Front view of Intel Xeon E3-1220

Reasons to consider the
Intel Xeon E3-1220

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Much better performance per watt 12.06 pt/W vs 3.29 pt/W Around 3.8x better performance per watt
Much better performance per dollar 4.59 pt/$ vs 0.22 pt/$ More than 21.2x better performance per dollar
Much lower typical power consumption 65W vs 109.69W More than 40% lower typical power consumption
Much lower annual commercial energy cost 70.08 $/year vs 118.26 $/year More than 40% lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 32.52 $/year More than 40% lower annual home energy cost
Better overclocked clock speed (Air) 3.49 GHz vs 3.44 GHz Almost the same

Benchmarks Real world tests of Xeon E5-2667 v3 vs E3-1220

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2667 v3  vs
E3-1220 
Clock speed 3.2 GHz 3.1 GHz
Turbo clock speed 3.6 GHz 3.4 GHz
Cores Octa core Quad core

features

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

power consumption

TDP 135W 80W
Annual home energy cost 32.52 $/year 19.27 $/year
Annual commercial energy cost 118.26 $/year 70.08 $/year
Performance per watt 3.29 pt/W 12.06 pt/W
Typical power consumption 109.69W 65W

bus

Architecture QPI DMI
Number of links 2 1
Transfer rate 9,600 MT/s 5,000 MT/s

details

Xeon E5-2667 v3  vs
E3-1220 
Architecture x86-64 x86-64
Threads 16 4
L3 cache 20 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 2 1
Operating temperature Unknown - 77.8°C Unknown - 69.1°C

overclocking

Overclocked clock speed 3.44 GHz 3.49 GHz
Overclocked clock speed (Water) 3.2 GHz 3.1 GHz
Overclocked clock speed (Air) 3.44 GHz 3.49 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
DDR3-1333
DDR3-1066
DDR3
DDR
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 21,333.32 MB/s
Maximum memory size 786,432 MB 32,768 MB
Intel Xeon E5-2667 v3
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Intel Xeon E3-1220
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