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Differences What are the advantages of each

Front view of Intel Core i7 4750HQ

Reasons to consider the
Intel Core i7 4750HQ

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Much better 3DMark06 CPU score 59 vs 57.3 Around 5% better 3DMark06 CPU score
Much better performance per dollar 2.47 pt/$ vs 0.63 pt/$ Around 4x better performance per dollar
Much better performance per watt 22.83 pt/W vs 3.47 pt/W More than 6.5x better performance per watt
Much better turbo clock speed 1,200 MHz vs 950 MHz More than 25% better turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better CompuBench 1.5 video composition score 16.67 fps vs 9.37 fps Around 80% better CompuBench 1.5 video composition score
More threads 8 vs 4 Twice as many threads
Better PassMark score 8,292 vs 6,037 More than 35% better PassMark score
Front view of Intel Core i5 6300HQ

Reasons to consider the
Intel Core i5 6300HQ

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Higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
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 350 MHz vs 200 MHz 75% higher GPU clock speed
Newer Jul, 2015 vs Jul, 2013 Release date over 2 years later
Significantly better overclocked clock speed (Water) 3.2 GHz vs 2 GHz More than 60% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 4750HQ vs i5 6300HQ

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 4750HQ
28.98 mHash/s
Core i5 6300HQ
23.46 mHash/s

CompuBench 1.5 (Face detection)

Core i7 4750HQ
17.53 mPixels/s
Core i5 6300HQ
17.34 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 4750HQ
2.18 fps
Core i5 6300HQ
1.14 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 4750HQ
3,840,000 MB/s
Core i5 6300HQ
145.7 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 4750HQ  vs
i5 6300HQ 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 3.2 GHz 3.2 GHz
Cores Quad core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes 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 47W 45W
Annual home energy cost 11.32 $/year 10.84 $/year
Annual commercial energy cost 41.17 $/year 39.42 $/year
Performance per watt 22.83 pt/W 3.47 pt/W
Typical power consumption 38.19W 36.56W

bus

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

details

Core i7 4750HQ  vs
i5 6300HQ 
Architecture x86-64 x86-64
Threads 8 4
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 22 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.16 GHz 3.2 GHz
Overclocked clock speed (Water) 2 GHz 3.2 GHz
Overclocked clock speed (Air) 3.16 GHz 3.2 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Pro Graphics 5200 Intel® HD Graphics 530
Number of displays supported 3 3
GPU clock speed 200 MHz 350 MHz
Turbo clock speed 1,200 MHz 950 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 12,800 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Core i7 4750HQ
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Intel Core i5 6300HQ
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