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Differences What are the advantages of each

Front view of Intel Xeon E5-2620

Reasons to consider the
Intel Xeon E5-2620

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More l3 cache 15 MB vs 8 MB Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
Supports more RAM 393,216 MB vs 65,536 MB Supports 6x more RAM
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Front view of Intel Xeon E3-1240L v5

Reasons to consider the
Intel Xeon E3-1240L v5

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher turbo clock speed 3.2 GHz vs 2.5 GHz Around 30% higher turbo clock speed
Much lower typical power consumption 20.31W vs 77.19W 3.8x lower typical power consumption
Significantly better overclocked clock speed (Air) 3.1 GHz vs 2.28 GHz More than 35% better overclocked clock speed (Air)
Newer Oct, 2015 vs Mar, 2012 Release date over 3 years later
Much lower annual home energy cost 6.02 $/year vs 22.89 $/year 3.8x lower annual home energy cost
Much lower annual commercial energy cost 21.9 $/year vs 83.22 $/year 3.8x lower annual commercial energy cost
Significantly better overclocked clock speed (Water) 3.1 GHz vs 2 GHz More than 55% better overclocked clock speed (Water)

Features Key features of the Xeon E5-2620  vs E3-1240L v5 

clock speed

turbo clock speed

Xeon E5-2620
2.5 GHz

L3 cache

overclocked clock speed (air)

Xeon E5-2620
2.28 GHz

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Xeon E5-2620  vs
E3-1240L v5 
Clock speed 2 GHz 2.1 GHz
Turbo clock speed 2.5 GHz 3.2 GHz
Cores Hexa 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 25W
Annual home energy cost 22.89 $/year 6.02 $/year
Annual commercial energy cost 83.22 $/year 21.9 $/year
Typical power consumption 77.19W 20.31W

bus

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

details

Xeon E5-2620  vs
E3-1240L v5 
Architecture x86-64 x86-64
Threads 12 8
L3 cache 15 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 2 1
Voltage range 0.6 - 1.35V 0.55 - 1.52V

overclocking

Overclocked clock speed 2.28 GHz 3.1 GHz
Overclocked clock speed (Water) 2 GHz 3.1 GHz
Overclocked clock speed (Air) 2.28 GHz 3.1 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 E5-2620
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Intel Xeon E3-1240L v5
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