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Intel Core i7 6700K

CPUBoss Winner
Front view of Intel Core i7 6700K

Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 4 GHz vs 3.46 GHz More than 15% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.73 GHz Around 15% higher turbo clock speed
More l3 cache 8 MB vs 4 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much better PassMark score 11,109 vs 3,310 More than 3.2x better PassMark score
Significantly lower typical power consumption 73.94W vs 97.7W Around 25% lower typical power consumption
Significantly better PassMark (Single core) score 2,349 vs 1,399 Around 70% better PassMark (Single core) score
More number of displays supported 3 vs 2 1 more number of displays supported
Newer Jul, 2015 vs Jan, 2010 Release date over 5 years later
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 8 vs 4 Twice as many threads
Much lower annual home energy cost 21.92 $/year vs 36.29 $/year Around 40% lower annual home energy cost
Significantly better overclocked clock speed (Water) 4.77 GHz vs 3.46 GHz Around 40% better overclocked clock speed (Water)
Lower annual commercial energy cost 79.72 $/year vs 94.87 $/year More than 15% lower annual commercial energy cost
Front view of Intel Core i5 670

Reasons to consider the
Intel Core i5 670

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Much better performance per dollar 2.21 pt/$ vs 0.91 pt/$ Around 2.5x better performance per dollar
Much higher GPU clock speed 733 MHz vs 350 MHz More than 2x higher GPU clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Better performance per watt 5.7 pt/W vs 3.49 pt/W Around 65% better performance per watt
Higher Maximum operating temperature 72.6 °C vs 64 °C Around 15% higher Maximum operating temperature

Benchmarks Real world tests of Core i7 6700K vs i5 670

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 6700K
17,583
Core i5 670
5,084

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 6700K
6,010 MB/s
Core i5 670
1,640,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 6700K
17,169
Core i5 670
5,052

GeekBench

Core i7 6700K
17,169
Core i5 670
5,823

Cinebench R10 32-Bit

Core i7 6700K
36,746
Core i5 670
11,294

PassMark Data courtesy Passmark

Core i7 6700K
11,109
Core i5 670
3,310

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 6700K  vs
i5 670 
Clock speed 4 GHz 3.46 GHz
Turbo clock speed 4.2 GHz 3.73 GHz
Cores Quad core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing No 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 91W 73W
Annual home energy cost 21.92 $/year 36.29 $/year
Annual commercial energy cost 79.72 $/year 94.87 $/year
Performance per watt 3.49 pt/W 5.7 pt/W
Typical power consumption 73.94W 97.7W

bus

Architecture FSB DMI
Number of links 0 1
Transfer rate 8,000 MT/s 2,500 MT/s

details

Core i7 6700K  vs
i5 670 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 14 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C Unknown - 72.6°C

overclocking

Overclocked clock speed 4.61 GHz 4.71 GHz
Overclocked clock speed (Water) 4.77 GHz 3.46 GHz
Overclocked clock speed (Air) 4.61 GHz 4.71 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 530 Intel® HD Graphics
Number of displays supported 3 2
GPU clock speed 350 MHz 733 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 25,600 MB/s 21,333.32 MB/s
Maximum memory size 65,536 MB 16,998.4 MB
Intel Core i7 6700K
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Intel Core i5 670
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