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Differences What are the advantages of each

Front view of Intel Xeon E7520

Reasons to consider the
Intel Xeon E7520

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Significantly more l3 cache 18 MB vs 8 MB 2.2x more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
Much more l3 cache per core 4.5 MB/core vs 2 MB/core 2.2x more l3 cache per core
Higher Maximum operating temperature 70 °C vs 66 °C More than 5% higher Maximum operating temperature
Front view of Intel Core i7 6700T

Reasons to consider the
Intel Core i7 6700T

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Much higher turbo clock speed 3.6 GHz vs 1.87 GHz Around 95% higher turbo clock speed
Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 2.8 GHz vs 1.87 GHz Around 50% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 28.44W vs 77.19W 2.7x lower typical power consumption
Much better overclocked clock speed (Air) 4.35 GHz vs 1.87 GHz More than 2.2x better overclocked clock speed (Air)
Newer Jul, 2015 vs Mar, 2010 Release date over 5 years later
Much better overclocked clock speed (Water) 4 GHz vs 1.87 GHz Around 2.2x better overclocked clock speed (Water)
Much lower annual home energy cost 8.43 $/year vs 22.89 $/year 2.7x lower annual home energy cost
Much lower annual commercial energy cost 30.66 $/year vs 83.22 $/year 2.7x lower annual commercial energy cost

Features Key features of the Xeon E7520  vs Core i7 6700T 

clock speed

Xeon E7520
1.87 GHz
Core i7 6700T
2.8 GHz

turbo clock speed

Xeon E7520
1.87 GHz
Core i7 6700T
3.6 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E7520
1.87 GHz
Core i7 6700T
4.35 GHz

overclocked clock speed (water)

Xeon E7520
1.87 GHz

Specifications Full list of technical specs

summary

Xeon E7520  vs
Core i7 6700T 
Clock speed 1.87 GHz 2.8 GHz
Turbo clock speed 1.87 GHz 3.6 GHz
Cores Quad 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 95W 35W
Annual home energy cost 22.89 $/year 8.43 $/year
Annual commercial energy cost 83.22 $/year 30.66 $/year
Typical power consumption 77.19W 28.44W

details

Xeon E7520  vs
Core i7 6700T 
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 18 MB 8 MB
L3 cache per core 4.5 MB/core 2 MB/core
Manufacture process 45 nm 14 nm
Max CPUs 4 1
Operating temperature Unknown - 70°C Unknown - 66°C

overclocking

Overclocked clock speed 1.87 GHz 4.35 GHz
Overclocked clock speed (Water) 1.87 GHz 4 GHz
Overclocked clock speed (Air) 1.87 GHz 4.35 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 1,100 MHz

bus

Architecture QPI FSB
Number of links 4 1
Transfer rate 4,800 MT/s 8,000 MT/s
Intel Xeon E7520
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Intel Core i7 6700T
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