IntelBX80662I76700K
IntelBX80677I77700K

4 Cores, 8 Threads
@4.0GHz Skylake (2015)

4 Cores, 8 Threads
@4.2GHz Kaby Lake (2017)

Real World Speed
Performance profile from 236,994 user samples
153,004 User Benchmarks
Best Bench: 107% Base clock 4 GHz, turbo 4.8 GHz (avg)
Worst Bench: 81% Base clock 4 GHz, turbo 0.95 GHz (avg)
Poor: 81% Great: 107%
SPEED RANK: 23rd / 980
Gaming
Gaming 93%
Nuclear submarine
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 69%
Battle cruiser
83,990 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5.05 GHz (avg)
Worst Bench: 90% Base clock 4.2 GHz
Poor: 90% Great: 112%
SPEED RANK: 14th / 980
Gaming
Gaming 100%
UFO
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
93 % -8% 100 % Slightly faster effective speed.
+8%
SC Mixed
Avg. Single Core Mixed Speed
131 Pts -7% 140 Pts Slightly faster single-core speed.
+7%
QC Mixed
Avg. Quad Core Mixed Speed
455 Pts -8% 492 Pts Slightly faster quad-core speed.
+8%
MC Mixed
Avg. Multi Core Mixed Speed
693 Pts -7% 741 Pts Slightly faster multi-core speed.
+7%
SC Mixed
OC Single Core Mixed Speed
144 Pts -7% 154 Pts Slightly faster OC single-core speed.
+7%
QC Mixed
OC Quad Core Mixed Speed
540 Pts -4% 564 Pts +4%
MC Mixed
OC Multi Core Mixed Speed
780 Pts -5% 818 Pts +5%
Market Share
Based on 5,492,193 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.6 % -58% 4.12 % Much higher market share.
+58%
Value
Value For Money
90.4 % -9% 99 % Slightly better value.
+9%
User Rating
UBM User Rating
103 % -56% 161 % Much more popular.
+56%
Price
Price (score)
$314 -4% $300 +4%
Age
Newest
26 Months -65% 9 Months Much more recent.
+65%
TDP
Thermal Design Power (TDP)
91 Watts 0% 91 Watts 0%
Cores
CPU Processing Cores
4 cores 0% 4 cores 0%
Threads
CPU Processing Threads
8 threads 0% 8 threads 0%
Lithography
Manufacturing process
14 nm 0% 14 nm 0%
Base Clock
Base Clock Speed
4 GHz -5% 4.2 GHz +5%
Turbo Clock
Turbo Clock Speed
4.2 GHz -7% 4.5 GHz Slightly faster turbo frequency.
+7%
SC Int
Single Core Integer Speed
142 Pts -6% 151 Pts Slightly faster single-core int speed.
+6%
SC Float
Single Core Floating Point Speed
147 Pts -7% 157 Pts Slightly faster single-core fp speed.
+7%
QC Int
Quad Core Integer Speed
525 Pts -5% 551 Pts +5%
QC Float
Quad Core Floating Point Speed
554 Pts -5% 579 Pts +5%
MC Int
Multi Core Integer Speed
721 Pts -5% 759 Pts Slightly faster multi-core int speed.
+5%
MC Float
Multi Core Floating Point Speed
819 Pts -5% 863 Pts Slightly faster multi-core fp speed.
+5%
Series
CPU Architecture
Skylake (2015) Kaby Lake (2017)
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 530 HD 630
Launch Date
Launch Date
Q3'15 Q1'17
Cache
Cache
8 MB SmartCache 8 MB
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
350 MHz 350.00 MHz

More specs » More specs »
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The Core i7-6700K is Intel's latest "Skylake" flagship processor. It replaces the hugely successful i7-4790K and takes the crown as the fastest mainstream consumer CPU available. Comparing performance and specs between the 4790K and 6700K shows that the configuration is largely unchanged (same base clocks, cores, threads) but the improved manufacturing process (14nm) brings a small reduction in TDP and a performance improvement of 8%; almost exactly the same jump as between the Ivy Bridge 3770K and Haswell 4770K. Owners of any unlocked-K Intel CPU from Sandy Bridge or onwards still have no real reason to upgrade as the performance improvements are largely academic but the i7-6700K will be the CPU of choice for the vast majority of top end PC builds in 2015. [Aug '15 CPUPro]

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The Core i7-7700K is Intel’s flagship Kaby Lake based CPU which is reported to have the same IPC as its predecessor, Skylake. Comparing the 7700K and 6700K shows that both average effective speed and peak overclocked speed are up by 7%. Most of the increase in average effective speed is explained by the 5% boost in base clocks from 4.0 to 4.2 GHz. The improved peak lab speed is attributable to a combination of better overclocking capacity and improvements in Intel’s speedshift technology which make the 7700K slightly more responsive. Kaby Lake also has marginally better HD 630 integrated graphics. The i7-7700K is priced similarly to the i7-6700K so for top end gaming and workstation builds, the 7700K is the clear choice for 2017. AMD’s Ryzen will release later this year so things could change at that time. [Jan '17 CPUPro]

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Processor Rankings (Price vs Performance) October 2017 CPU Rankings.

Welcome to our desktop CPU comparison. We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by price to yield a value for money rating which is geared towards gamers. Calculated values don't always paint the whole picture so we check them against hundreds of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top CPUs. [CPUPro]

How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-7700K $300Nvidia GTX 1070 $394Samsung 850 Evo 250GB $95
AMD Ryzen 7 1700 $280AMD RX 480 $491Samsung 850 Pro 256GB $128
Intel Core i5-7600K $230Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $950SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3000 C15 2x8GB $163SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $180SanDisk Ultra Fit 32GB $13
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