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Front view of Intel Core i7 4790K

Intel Core i7 4790K

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon D-1520

Reasons to consider the
Intel Xeon D-1520

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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 36.56W vs 71.5W Around 50% lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Higher Maximum operating temperature 80 °C vs 74.04 °C Around 10% higher Maximum operating temperature
Much lower annual home energy cost 10.84 $/year vs 21.2 $/year Around 50% lower annual home energy cost
Much lower annual commercial energy cost 39.42 $/year vs 77.09 $/year Around 50% lower annual commercial energy cost
Supports more RAM 131,072 MB vs 32,768 MB Supports 4x more RAM
Newer Mar, 2015 vs Apr, 2014 Release date 11 months later
Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Much higher clock speed 4 GHz vs 2.2 GHz More than 80% higher clock speed
Much higher turbo clock speed 4.4 GHz vs 2.6 GHz Around 70% higher turbo clock speed
Much better performance per dollar 3.69 pt/$ vs 1.05 pt/$ More than 3.5x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better overclocked clock speed (Air) 4.63 GHz vs 2.2 GHz More than 2x better overclocked clock speed (Air)
Much better PassMark (Single core) score 2,530 vs 1,398 More than 80% better PassMark (Single core) score
Much better performance per watt 11.42 pt/W vs 4.65 pt/W Around 2.5x better performance per watt
Significantly better PassMark score 11,194 vs 6,396 More than 75% better PassMark score
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Much better overclocked clock speed (Water) 4.8 GHz vs 2.2 GHz Around 2.2x better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon D-1520 vs Core i7 4790K

PassMark Data courtesy Passmark

Xeon D-1520
6,396
Core i7 4790K
11,194

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon D-1520  vs
Core i7 4790K 
Clock speed 2.2 GHz 4 GHz
Turbo clock speed 2.6 GHz 4.4 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 88W
Annual home energy cost 10.84 $/year 21.2 $/year
Annual commercial energy cost 39.42 $/year 77.09 $/year
Performance per watt 4.65 pt/W 11.42 pt/W
Typical power consumption 36.56W 71.5W

bus

Architecture DMI 2.0 DMI 2.0
Number of links 1 0

details

Xeon D-1520  vs
Core i7 4790K 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 6 MB 8 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1
Operating temperature Unknown - 80°C Unknown - 74.04°C

overclocking

Overclocked clock speed 2.2 GHz 4.63 GHz
Overclocked clock speed (Water) 2.2 GHz 4.8 GHz
Overclocked clock speed (Air) 2.2 GHz 4.63 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4600
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,250 MHz

memory controller

Memory controller Built-in Built-in
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum memory size 131,072 MB 32,768 MB
Intel Xeon D-1520
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Intel Core i7 4790K
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