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Differences What are the advantages of each

Front view of Intel Xeon L5638

Reasons to consider the
Intel Xeon L5638

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Much lower typical power consumption 48.75W vs 85.31W Around 45% lower typical power consumption
Much lower annual home energy cost 14.45 $/year vs 25.29 $/year Around 45% lower annual home energy cost
Much lower annual commercial energy cost 52.56 $/year vs 91.98 $/year Around 45% lower annual commercial energy cost
Better overclocked clock speed (Water) 3.03 GHz vs 2.3 GHz More than 30% better overclocked clock speed (Water)
Front view of Intel E5-2658V4

Reasons to consider the
Intel E5-2658V4

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Much more l3 cache 35 MB vs 12 MB Around 3x more l3 cache; more data can be stored in the l3 cache for quick access later
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 2.8 GHz vs 2.4 GHz More than 15% higher turbo clock speed
More cores 14 vs 6 8 more cores; run more applications at once
Higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
More threads 28 vs 12 16 more threads
Newer Jan, 2016 vs Mar, 2010 Release date over 5 years later
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Higher Maximum operating temperature 91 °C vs 85 °C More than 5% higher Maximum operating temperature
Better overclocked clock speed (Air) 2.3 GHz vs 2 GHz Around 15% better overclocked clock speed (Air)

Features Key features of the Xeon L5638  vs E5-2658V4 

clock speed

Xeon L5638
2 GHz
E5-2658V4
2.3 GHz

turbo clock speed

Xeon L5638
2.4 GHz
E5-2658V4
2.8 GHz

L3 cache

Xeon L5638
12 MB
E5-2658V4
35 MB

overclocked clock speed (air)

Xeon L5638
2 GHz
E5-2658V4
2.3 GHz

overclocked clock speed (water)

Xeon L5638
3.03 GHz
E5-2658V4
2.3 GHz

TDP

Specifications Full list of technical specs

summary

Xeon L5638  vs
E5-2658V4 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 2.4 GHz 2.8 GHz
Cores Hexa core Processing Cores

features

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

power consumption

TDP 60W 105W
Annual home energy cost 14.45 $/year 25.29 $/year
Annual commercial energy cost 52.56 $/year 91.98 $/year
Typical power consumption 48.75W 85.31W

details

Xeon L5638  vs
E5-2658V4 
Threads 12 28
L3 cache 12 MB 35 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 2 2
Operating temperature Unknown - 85°C Unknown - 91°C

overclocking

Overclocked clock speed 2 GHz 2.3 GHz
Overclocked clock speed (Water) 3.03 GHz 2.3 GHz
Overclocked clock speed (Air) 2 GHz 2.3 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

bus

Architecture QPI QPI
Number of links 2 2
Data rate 46,928 MB/s 76,800 MB/s
Transfer rate 5,860 MT/s 9,600 MT/s
Clock speed 2,930 MHz 4,800 MHz
Intel Xeon L5638
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Intel E5-2658V4
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