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Differences What are the advantages of each

Front view of Intel Xeon E5-1620 v3

Reasons to consider the
Intel Xeon E5-1620 v3

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Much better performance per dollar 5.47 pt/$ vs 0.93 pt/$ Around 6x better performance per dollar
Much better performance per watt 11.61 pt/W vs 3.3 pt/W More than 3.5x better performance per watt
Supports more RAM 786,432 MB vs 65,536 MB Supports 12x more RAM
Slightly more l3 cache 10 MB vs 8 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Front view of Intel E3-1245V5

Reasons to consider the
Intel E3-1245V5

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 65W vs 113.75W Around 45% lower typical power consumption
Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher turbo clock speed 3.9 GHz vs 3.6 GHz Around 10% higher turbo clock speed
Much lower annual home energy cost 19.27 $/year vs 33.73 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 70.08 $/year vs 122.64 $/year Around 45% lower annual commercial energy cost
Slightly better PassMark (Single core) score 2,159 vs 2,024 More than 5% better PassMark (Single core) score
Newer Oct, 2015 vs Jul, 2014 Release date over 1 years later
Slightly better overclocked clock speed (Air) 3.9 GHz vs 3.73 GHz Around 5% better overclocked clock speed (Air)

Benchmarks Real world tests of Xeon E5-1620 v3 vs E3-1245V5

GeekBench 3 (Multi-core) Data courtesy Primate Labs

E3-1245V5
13,358

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-1620 v3
4,055,000 MB/s
E3-1245V5
4,930 MB/s

PassMark Data courtesy Passmark

E3-1245V5
10,341

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-1620 v3  vs
E3-1245V5 
Clock speed 3.5 GHz 3.5 GHz
Turbo clock speed 3.6 GHz 3.9 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
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 140W 80W
Annual home energy cost 33.73 $/year 19.27 $/year
Annual commercial energy cost 122.64 $/year 70.08 $/year
Performance per watt 11.61 pt/W 3.3 pt/W
Typical power consumption 113.75W 65W

bus

Architecture QPI FSB
Number of links 0 1
Transfer rate 0 MT/s 8,000 MT/s

details

Xeon E5-1620 v3  vs
E3-1245V5 
Architecture x86-64 x86-64
Threads 8 8
L3 cache 10 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 22 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.73 GHz 3.9 GHz
Overclocked clock speed (Water) 3.8 GHz 3.9 GHz
Overclocked clock speed (Air) 3.73 GHz 3.9 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics P530
Number of displays supported N/A 3
GPU clock speed N/A 400 MHz
Turbo clock speed N/A 1,150 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1333
DDR
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 6,400 MB/s 12,800 MB/s
Maximum memory size 786,432 MB 65,536 MB
Intel Xeon E5-1620 v3
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Intel E3-1245V5
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