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Differences What are the advantages of each

Front view of Intel Xeon EC5539

Reasons to consider the
Intel Xeon EC5539

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Significantly lower typical power consumption 52.81W vs 73.94W Around 30% lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Higher Maximum operating temperature 74.6 °C vs 64 °C More than 15% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 21.92 $/year Around 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 79.72 $/year Around 30% lower annual commercial energy cost
Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much higher clock speed 4 GHz vs 2.27 GHz More than 75% higher clock speed
Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
More l3 cache 8 MB vs 4 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 8 vs 2 6 more threads
Newer Jul, 2015 vs Feb, 2010 Release date over 5 years later
More cores 4 vs 2 Twice as many cores; run more applications at once

Features Key features of the Xeon EC5539  vs Core i7 6700K 

clock speed

Xeon EC5539
2.27 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Xeon EC5539  vs
Core i7 6700K 
Clock speed 2.27 GHz 4 GHz
Cores Dual core Quad core

features

Has a NX bit 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 65W 91W
Annual home energy cost 15.66 $/year 21.92 $/year
Annual commercial energy cost 56.94 $/year 79.72 $/year
Typical power consumption 52.81W 73.94W

bus

Architecture QPI FSB
Number of links 1 0
Transfer rate 5,870 MT/s 8,000 MT/s

details

Xeon EC5539  vs
Core i7 6700K 
Architecture x86-64 x86-64
Threads 2 8
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 4 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 14 nm
Max CPUs 2 1
Operating temperature Unknown - 74.6°C Unknown - 64°C

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 530
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,150 MHz

memory controller

Memory controller Built-in Built-in
Channels Triple Channel Dual Channel
Supports ECC Yes No
Intel Xeon EC5539
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Intel Core i7 6700K
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