CPUBoss Review Our evaluation of 6600U vs 6440HQ among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS
Front view of Intel Core i5 6440HQ

Intel Core i5 6440HQ

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Core i7 6600U

Reasons to consider the
Intel Core i7 6600U

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Much better performance per watt 13.12 pt/W vs 5.11 pt/W More than 2.5x better performance per watt
Significantly lower typical power consumption 12.19W vs 36.56W 3x lower typical power consumption
Better turbo clock speed 1,050 MHz vs 950 MHz More than 10% better turbo clock speed
Better CompuBench 1.5 T-Rex score 1.49 fps vs 1.29 fps More than 15% better CompuBench 1.5 T-Rex score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better overclocked clock speed (Air) 3.4 GHz vs 3.19 GHz More than 5% better overclocked clock speed (Air)
Significantly lower annual home energy cost 3.61 $/year vs 10.84 $/year 3x lower annual home energy cost
Significantly lower annual commercial energy cost 13.14 $/year vs 39.42 $/year 3x lower annual commercial energy cost
Better overclocked clock speed (Water) 3.4 GHz vs 2.6 GHz More than 30% better overclocked clock speed (Water)
Front view of Intel Core i5 6440HQ

Reasons to consider the
Intel Core i5 6440HQ

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Much better 3DMark06 CPU score 61.1 vs 50.8 More than 20% better 3DMark06 CPU score
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly better performance per dollar 0.92 pt/$ vs 0.5 pt/$ Around 85% better performance per dollar
Slightly more l3 cache 6 MB vs 4 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
Better PassMark score 6,687 vs 4,814 Around 40% better PassMark score
Higher GPU clock speed 350 MHz vs 300 MHz More than 15% higher GPU clock speed

Benchmarks Real world tests of Core i7 6600U vs i5 6440HQ

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6600U
27.11 mHash/s
Core i5 6440HQ
23.73 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6600U
21.61 mPixels/s
Core i5 6440HQ
16.57 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i7 6600U
218.79 fps
Core i5 6440HQ
177.33 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6600U
1.49 fps
Core i5 6440HQ
1.29 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i7 6600U
10.57 fps
Core i5 6440HQ
10.57 fps

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6600U  vs
i5 6440HQ 
Clock speed 2.6 GHz 2.6 GHz
Turbo clock speed 3.4 GHz 3.5 GHz
Cores Dual core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes 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 15W 45W
Annual home energy cost 3.61 $/year 10.84 $/year
Annual commercial energy cost 13.14 $/year 39.42 $/year
Performance per watt 13.12 pt/W 5.11 pt/W
Typical power consumption 12.19W 36.56W

bus

Architecture FSB FSB
Number of links 1 1
Transfer rate 4,000 MT/s 8,000 MT/s

details

Core i7 6600U  vs
i5 6440HQ 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 4 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 3.4 GHz 3.19 GHz
Overclocked clock speed (Water) 3.4 GHz 2.6 GHz
Overclocked clock speed (Air) 3.4 GHz 3.19 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 520 Intel® HD Graphics 530
Number of displays supported 3 3
GPU clock speed 300 MHz 350 MHz
Turbo clock speed 1,050 MHz 950 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Core i7 6600U
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Intel Core i5 6440HQ
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