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Differences What are the advantages of each

Front view of Intel Xeon E7-2870

Reasons to consider the
Intel Xeon E7-2870

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Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 30 MB vs 8 MB 3.8x more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 10 vs 4 6 more cores; run more applications at once
More threads 20 vs 8 12 more threads
Supports more RAM 1,048,576 MB vs 65,536 MB Supports 16x more RAM
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Front view of Intel Core i7 6700

Reasons to consider the
Intel Core i7 6700

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Significantly higher turbo clock speed 4 GHz vs 2.8 GHz Around 45% higher turbo clock speed
Significantly higher clock speed 3.4 GHz vs 2.4 GHz More than 40% higher clock speed
Much newer manufacturing process 14 nm vs 32 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
Much lower typical power consumption 52.81W vs 105.63W 2x lower typical power consumption
Much better performance per dollar 0.87 pt/$ vs 0.01 pt/$ Around 66.2x better performance per dollar
Much better overclocked clock speed (Air) 3.98 GHz vs 2.4 GHz More than 65% better overclocked clock speed (Air)
Significantly better performance per watt 4.09 pt/W vs 0.43 pt/W More than 9.5x better performance per watt
Newer Jul, 2015 vs Apr, 2011 Release date over 4 years later
Much lower annual home energy cost 15.66 $/year vs 31.32 $/year 2x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 113.88 $/year 2x lower annual commercial energy cost
Much better overclocked clock speed (Water) 4.18 GHz vs 2.4 GHz Around 75% better overclocked clock speed (Water)

Features Key features of the Xeon E7-2870  vs Core i7 6700 

clock speed

Xeon E7-2870
2.4 GHz
Core i7 6700
3.4 GHz

turbo clock speed

Xeon E7-2870
2.8 GHz
Core i7 6700
4 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E7-2870
2.4 GHz
Core i7 6700
3.98 GHz

overclocked clock speed (water)

Xeon E7-2870
2.4 GHz
Core i7 6700
4.18 GHz

Specifications Full list of technical specs

summary

Xeon E7-2870  vs
Core i7 6700 
Clock speed 2.4 GHz 3.4 GHz
Turbo clock speed 2.8 GHz 4 GHz
Cores Deca 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 130W 65W
Annual home energy cost 31.32 $/year 15.66 $/year
Annual commercial energy cost 113.88 $/year 56.94 $/year
Performance per watt 0.43 pt/W 4.09 pt/W
Typical power consumption 105.63W 52.81W

bus

Architecture QPI FSB
Number of links 1 1
Transfer rate 6,400 MT/s 8,000 MT/s

details

Xeon E7-2870  vs
Core i7 6700 
Architecture x86-64 x86-64
Threads 20 8
L2 cache 3 MB 1 MB
L2 cache per core 0.3 MB/core 0.25 MB/core
L3 cache 30 MB 8 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 2 1
Operating temperature Unknown - 69°C Unknown - 71°C

overclocking

Overclocked clock speed 2.4 GHz 3.98 GHz
Overclocked clock speed (Water) 2.4 GHz 4.18 GHz
Overclocked clock speed (Air) 2.4 GHz 3.98 GHz

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
Memory type
DDR3L-1600
DDR3
DDR
Channels Quad Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 1,048,576 MB 65,536 MB
Intel Xeon E7-2870
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Intel Core i7 6700
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