CPUBoss Review Our evaluation of 6700 vs 6600K 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

8.8

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 6700 

CPUBoss recommends the Intel Core i7 6700  based on its performance and power consumption.

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VS

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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Much better 3DMark06 CPU score 76 vs 67.7 More than 10% better 3DMark06 CPU score
Significantly lower typical power consumption 52.81W vs 73.94W Around 30% lower typical power consumption
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
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
More threads 8 vs 4 Twice as many threads
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 8,012 More than 25% better PassMark score
Better performance per watt 4.09 pt/W vs 2.45 pt/W More than 65% better performance per watt
Higher Maximum operating temperature 71 °C vs 64 °C More than 10% higher Maximum operating temperature
Significantly lower annual home energy cost 15.66 $/year vs 21.92 $/year Around 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 79.72 $/year Around 30% lower annual commercial energy cost
Front view of Intel Core i5 6600K

Reasons to consider the
Intel Core i5 6600K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Better overclocked clock speed (Air) 4.54 GHz vs 3.98 GHz Around 15% better overclocked clock speed (Air)
Better CompuBench 1.5 video composition score 14.26 fps vs 11.57 fps Around 25% better CompuBench 1.5 video composition score
Better overclocked clock speed (Water) 4.57 GHz vs 4.18 GHz Around 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 6700 vs i5 6600K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6700
31.77 mHash/s
Core i5 6600K
35.25 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6700
-1 mPixels/s
Core i5 6600K
28.75 mPixels/s

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i7 6700
-1 fps
Core i5 6600K
173.8 fps

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6700
1.7 fps
Core i5 6600K
1.91 fps

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i7 6700
11.57 fps
Core i5 6600K
14.26 fps

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700  vs
i5 6600K 
Clock speed 3.4 GHz 3.5 GHz
Turbo clock speed 4 GHz 3.9 GHz
Cores Quad core Quad core
Is unlocked No Yes

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 91W
Annual home energy cost 15.66 $/year 21.92 $/year
Annual commercial energy cost 56.94 $/year 79.72 $/year
Performance per watt 4.09 pt/W 2.45 pt/W
Typical power consumption 52.81W 73.94W

bus

Architecture FSB FSB
Number of links 1 0
Transfer rate 8,000 MT/s 8,000 MT/s

details

Core i7 6700  vs
i5 6600K 
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 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 - 64°C

overclocking

Overclocked clock speed 3.98 GHz 4.54 GHz
Overclocked clock speed (Water) 4.18 GHz 4.57 GHz
Overclocked clock speed (Air) 3.98 GHz 4.54 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 1,150 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 6600K
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Comments

Showing 1 comment.
So, lower TDP, an extra set of cores and a tad more L3 Cache is enough to give 6700 that much of a win? ...ok...
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