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Differences What are the advantages of each

Front view of Intel Xeon E5-4620

Reasons to consider the
Intel Xeon E5-4620

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Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
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 cores 8 vs 4 Twice as many cores; run more applications at once
More threads 16 vs 8 Twice as many threads
Supports more RAM 393,216 MB vs 65,536 MB Supports 6x more RAM
Better performance per watt 5.25 pt/W vs 3.49 pt/W More than 50% better performance per watt
Front view of Intel Xeon E3-1270 v5

Reasons to consider the
Intel Xeon E3-1270 v5

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Much higher clock speed 3.6 GHz vs 2.2 GHz Around 65% higher clock speed
Much higher turbo clock speed 4 GHz vs 2.6 GHz Around 55% higher turbo clock speed
Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better PassMark (Single core) score 2,144 vs 1,232 Around 75% better PassMark (Single core) score
Much better overclocked clock speed (Air) 4 GHz vs 2.32 GHz Around 75% better overclocked clock speed (Air)
Much better performance per dollar 0.8 pt/$ vs 0.27 pt/$ Around 3x better performance per dollar
Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Newer Oct, 2015 vs May, 2012 Release date over 3 years later
Better PassMark score 10,207 vs 8,127 More than 25% better PassMark score
Much better overclocked clock speed (Water) 4 GHz vs 2.2 GHz More than 80% better overclocked clock speed (Water)
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E5-4620 vs E3-1270 v5

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-4620
1,830 MB/s
Xeon E3-1270 v5
5,260 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-4620  vs
E3-1270 v5 
Clock speed 2.2 GHz 3.6 GHz
Turbo clock speed 2.6 GHz 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 95W 80W
Annual home energy cost 22.89 $/year 19.27 $/year
Annual commercial energy cost 83.22 $/year 70.08 $/year
Performance per watt 5.25 pt/W 3.49 pt/W
Typical power consumption 77.19W 65W

bus

Architecture QPI FSB
Number of links 2 1
Transfer rate 7,200 MT/s 8,000 MT/s

details

Xeon E5-4620  vs
E3-1270 v5 
Architecture x86-64 x86-64
Threads 16 8
L3 cache 16 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 4 1
Voltage range 0.6 - 1.35V 0.55 - 1.52V

overclocking

Overclocked clock speed 2.32 GHz 4 GHz
Overclocked clock speed (Water) 2.2 GHz 4 GHz
Overclocked clock speed (Air) 2.32 GHz 4 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
DDR3L-1333
DDR3
DDR3-800
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 42,666.64 MB/s 12,800 MB/s
Maximum memory size 393,216 MB 65,536 MB
Intel Xeon E5-4620
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Intel Xeon E3-1270 v5
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