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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
Higher GPU clock speed 300 MHz vs 200 MHz 50% higher GPU clock speed
Newer Apr, 2015 vs Jul, 2014 Release date 9 months later
Front view of Intel Core i7 4980HQ

Reasons to consider the
Intel Core i7 4980HQ

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Much better 3DMark06 CPU score 69 vs 45.1 Around 55% better 3DMark06 CPU score
Much better performance per watt 28.81 pt/W vs 7.46 pt/W More than 3.8x better performance per watt
Much better performance per dollar 2.17 pt/$ vs 0.56 pt/$ More than 3.8x better performance per dollar
Slightly higher turbo clock speed 4 GHz vs 3.8 GHz More than 5% higher turbo clock speed
Significantly better turbo clock speed 1,300 MHz vs 1,150 MHz Around 15% better turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 5950HQ vs 4980HQ

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 5950HQ  vs
4980HQ 
Clock speed 2.9 GHz 2.8 GHz
Turbo clock speed 3.8 GHz 4 GHz
Cores Quad core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No 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 47W 47W
Annual home energy cost 11.32 $/year 11.32 $/year
Annual commercial energy cost 41.17 $/year 41.17 $/year
Performance per watt 7.46 pt/W 28.81 pt/W
Typical power consumption 38.19W 38.19W

bus

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

details

Core i7 5950HQ  vs
4980HQ 
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 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.94 GHz 3.86 GHz
Overclocked clock speed (Water) 2.9 GHz 2.8 GHz
Overclocked clock speed (Air) 3.94 GHz 3.86 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Pro Graphics 6200 Intel® Iris™ Pro Graphics 5200
Number of displays supported 3 3
GPU clock speed 300 MHz 200 MHz
Turbo clock speed 1,150 MHz 1,300 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 12,800 MB/s 12,800 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 5950HQ
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Intel Core i7 4980HQ
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