CPUBoss Review Our evaluation of 6700 vs 6400 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

8.4

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 6700 

CPUBoss recommends the Intel Core i7 6700  based on its performance and single-core performance.

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VS

Intel Core i7 6700

CPUBoss Winner
Front view of Intel Core i7 6700

Differences What are the advantages of each

Front view of Intel Core i7 6700

Reasons to consider the
Intel Core i7 6700

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Higher turbo clock speed 4 GHz vs 3.3 GHz More than 20% higher turbo clock speed
Higher clock speed 3.4 GHz vs 2.7 GHz More than 25% higher clock speed
Significantly better turbo clock speed 1,150 MHz vs 950 MHz More than 20% better turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better PassMark (Single core) score 2,159 vs 1,832 Around 20% better PassMark (Single core) score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better PassMark score 10,038 vs 6,727 Around 50% better PassMark score
More threads 8 vs 4 Twice as many threads
Better performance per watt 4.71 pt/W vs 2.62 pt/W Around 80% better performance per watt
Front view of Intel Core i5 6400

Reasons to consider the
Intel Core i5 6400

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Slightly better performance per dollar 1.07 pt/$ vs 1 pt/$ More than 5% better performance per dollar
Slightly better overclocked clock speed (Water) 4.46 GHz vs 4.21 GHz More than 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 6700 vs i5 6400

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6700
33.87 mHash/s
Core i5 6400
24.14 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6700
-1 mPixels/s
Core i5 6400
19.56 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i7 6700
260.29 fps
Core i5 6400
147.52 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6700
1.7 fps
Core i5 6400
1.16 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i7 6700
11.57 fps
Core i5 6400
10.75 fps

PassMark Data courtesy Passmark

Core i7 6700
10,038
Core i5 6400
6,727

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700  vs
i5 6400 
Clock speed 3.4 GHz 2.7 GHz
Turbo clock speed 4 GHz 3.3 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 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 4.71 pt/W 2.62 pt/W
Typical power consumption 52.81W 52.81W

bus

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

details

Core i7 6700  vs
i5 6400 
Architecture x86-64 x86-64
Threads 8 4
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
Operating temperature Unknown - 71°C Unknown - 71°C

overclocking

Overclocked clock speed 3.82 GHz 3.64 GHz
Overclocked clock speed (Water) 4.21 GHz 4.46 GHz
Overclocked clock speed (Air) 3.82 GHz 3.64 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® HD Graphics 530
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,150 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 65,536 MB 65,536 MB
Intel Core i7 6700
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Intel Core i5 6400
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Comments

Showing 1 comment.
i5 6400 best value not huge diference
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