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Differences What are the advantages of each

Front view of Intel Core i7 5950HQ

Reasons to consider the
Intel Core i7 5950HQ

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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 38.19W vs 71.5W More than 45% lower typical power consumption
Much lower annual home energy cost 11.32 $/year vs 21.2 $/year More than 45% lower annual home energy cost
Much lower annual commercial energy cost 41.17 $/year vs 77.09 $/year More than 45% lower annual commercial energy cost
Newer Apr, 2015 vs Apr, 2014 Release date a year later
Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Much better 3DMark06 CPU score 79 vs 45.1 More than 75% better 3DMark06 CPU score
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher clock speed 4 GHz vs 2.9 GHz Around 40% higher clock speed
Much better performance per dollar 3.69 pt/$ vs 0.56 pt/$ More than 6.5x better performance per dollar
Higher turbo clock speed 4.4 GHz vs 3.8 GHz More than 15% higher turbo clock speed
Better turbo clock speed 1,250 MHz vs 1,150 MHz Around 10% better turbo clock speed
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
Significantly better performance per watt 11.42 pt/W vs 7.46 pt/W Around 55% better performance per watt
Better overclocked clock speed (Air) 4.63 GHz vs 3.94 GHz Around 20% better overclocked clock speed (Air)
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better PassMark (Single core) score 2,530 vs 2,263 More than 10% better PassMark (Single core) score
Higher GPU clock speed 350 MHz vs 300 MHz More than 15% higher GPU clock speed
Much better overclocked clock speed (Water) 4.8 GHz vs 2.9 GHz More than 65% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 5950HQ vs 4790K

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 5950HQ  vs
4790K 
Clock speed 2.9 GHz 4 GHz
Turbo clock speed 3.8 GHz 4.4 GHz
Cores Quad core Quad core
Is unlocked No Yes

features

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

power consumption

TDP 47W 88W
Annual home energy cost 11.32 $/year 21.2 $/year
Annual commercial energy cost 41.17 $/year 77.09 $/year
Performance per watt 7.46 pt/W 11.42 pt/W
Typical power consumption 38.19W 71.5W

bus

Architecture DMI 2.0 DMI 2.0
Number of links 1 0
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 5950HQ  vs
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

overclocking

Overclocked clock speed 3.94 GHz 4.63 GHz
Overclocked clock speed (Water) 2.9 GHz 4.8 GHz
Overclocked clock speed (Air) 3.94 GHz 4.63 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Pro Graphics 6200 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 300 MHz 350 MHz
Turbo clock speed 1,150 MHz 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 12,800 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 5950HQ
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Intel Core i7 4790K
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