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Intel Core i7 6700K

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 Front view of Intel Core i7 6700K
Front view of Intel Core i7 5950HQ

Intel Core i7 5950HQ

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Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much better 3DMark06 CPU score 80.5 vs 45.1 Around 80% 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
Higher turbo clock speed 4.2 GHz vs 3.8 GHz More than 10% higher 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 dollar 0.91 pt/$ vs 0.56 pt/$ More than 60% better performance per dollar
Better overclocked clock speed (Air) 4.61 GHz vs 3.94 GHz More than 15% 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
Higher GPU clock speed 350 MHz vs 300 MHz More than 15% higher GPU clock speed
Much better overclocked clock speed (Water) 4.77 GHz vs 2.9 GHz Around 65% better overclocked clock speed (Water)
Newer Jul, 2015 vs Apr, 2015 Release date 3 months later
Front view of Intel Core i7 5950HQ

Reasons to consider the
Intel Core i7 5950HQ

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Much lower typical power consumption 38.19W vs 73.94W Around 50% lower typical power consumption
Significantly better performance per watt 7.46 pt/W vs 3.49 pt/W Around 2.2x better performance per watt
Much lower annual home energy cost 11.32 $/year vs 21.92 $/year Around 50% lower annual home energy cost
Much lower annual commercial energy cost 41.17 $/year vs 79.72 $/year Around 50% lower annual commercial energy cost

Benchmarks Real world tests of Core i7 6700K vs 5950HQ

3D Mark 06 (CPU)

Core i7 6700K
80.5
Core i7 5950HQ
45.1

PassMark Data courtesy Passmark

Core i7 6700K
11,109
Core i7 5950HQ
10,951

PassMark (Single Core)

Core i7 6700K
2,349
Core i7 5950HQ
2,263

Specifications Full list of technical specs

summary

 Core i7 6700K  vs
5950HQ 
Clock speed 4 GHz 2.9 GHz
Turbo clock speed 4.2 GHz 3.8 GHz
Cores Quad core Quad core
Is unlocked Yes No

features
Has a NX bit Yes Yes
Supports trusted computing No No
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 91W 47W
Annual home energy cost 21.92 $/year 11.32 $/year
Annual commercial energy cost 79.72 $/year 41.17 $/year
Performance per watt 3.49 pt/W 7.46 pt/W
Typical power consumption 73.94W 38.19W

bus
Architecture FSB DMI 2.0
Number of links 0 1
Transfer rate 8,000 MT/s 5,000 MT/s

details

 Core i7 6700K  vs
5950HQ 
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 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking
Overclocked clock speed 4.61 GHz 3.94 GHz
Overclocked clock speed (Water) 4.77 GHz 2.9 GHz
Overclocked clock speed (Air) 4.61 GHz 3.94 GHz

integrated graphics
GPU GPU GPU
Label Intel® HD Graphics 530 Intel® Iris™ Pro Graphics 6200
Number of displays supported 3 3
GPU clock speed 350 MHz 300 MHz
Turbo clock speed 1,150 MHz 1,150 MHz

memory controller
Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 65,536 MB 32,768 MB
Intel Core i7 6700K
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Intel Core i7 5950HQ
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