CPUBoss Review Our evaluation of 6700K vs 6900K 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

8.2

CPUBoss Score

Combination of all six facets

Winner
Intel 6900K 

CPUBoss recommends the Intel 6900K  based on its performance.

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VS
Front view of Intel 6900K

Intel 6900K

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

Report a correction
Significantly higher clock speed 4 GHz vs 3.2 GHz Around 25% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher turbo clock speed 4.2 GHz vs 3.7 GHz Around 15% higher turbo clock speed
Much lower typical power consumption 73.94W vs 113.75W 35% lower typical power consumption
Much lower annual home energy cost 21.92 $/year vs 33.73 $/year 35% lower annual home energy cost
Much lower annual commercial energy cost 79.72 $/year vs 122.64 $/year 35% lower annual commercial energy cost
Better overclocked clock speed (Air) 4.61 GHz vs 4.3 GHz More than 5% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.77 GHz vs 4.29 GHz More than 10% better overclocked clock speed (Water)
Front view of Intel 6900K

Reasons to consider the
Intel 6900K

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Much better CompuBench 1.5 bitcoin mining score 101.59 mHash/s vs 35.02 mHash/s Around 3x better CompuBench 1.5 bitcoin mining score
Significantly better PassMark score 17,994 vs 11,109 More than 60% better PassMark score
More cores 8 vs 4 Twice as many cores; run more applications at once
More threads 16 vs 8 Twice as many threads
Newer Apr, 2016 vs Jul, 2015 Release date 9 months later

Benchmarks Real world tests of Core i7 6700K vs 6900K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6700K
35.02 mHash/s
6900K
101.59 mHash/s

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 6700K
17,583
6900K
29,191

GeekBench 3 (Single core) Data courtesy Primate Labs

6900K
3,905.5

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 6700K
6,010 MB/s
6900K
4,795 MB/s

Cinebench R10 32-Bit

Core i7 6700K
36,746
6900K
48,835

Cinebench R10 32-Bit (Single Core)

6900K
7,618

PassMark Data courtesy Passmark

Core i7 6700K
11,109
6900K
17,994

PassMark (Single Core)

6900K
2,224

Specifications Full list of technical specs

summary

Core i7 6700K  vs
6900K 
Clock speed 4 GHz 3.2 GHz
Turbo clock speed 4.2 GHz 3.7 GHz
Cores Quad core Octa core
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing No 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 91W 140W
Annual home energy cost 21.92 $/year 33.73 $/year
Annual commercial energy cost 79.72 $/year 122.64 $/year
Performance per watt 3.49 pt/W 3.62 pt/W
Typical power consumption 73.94W 113.75W

bus

Architecture FSB FSB
Number of links 0 1

details

Core i7 6700K  vs
6900K 
Architecture x86-64 x86-64
Threads 8 16
Manufacture process 14 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.61 GHz 4.3 GHz
Overclocked clock speed (Water) 4.77 GHz 4.29 GHz
Overclocked clock speed (Air) 4.61 GHz 4.3 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 530 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,150 MHz N/A

memory controller

Memory controller Built-in Built-in
Channels Dual Channel Quad Channel
Supports ECC No No
Maximum memory size 65,536 MB 131,072 MB
Intel Core i7 6700K
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Intel 6900K
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