IntelBX80677I77700K
IntelBX80662I76700K

4 Cores, 8 Threads @4.2GHz, Kaby Lake.
Release date: Q1 2017.

4 Cores, 8 Threads @4.0GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 512,527 user samples
253,912 User Benchmarks
Best Bench: 110% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 81% Base clock 4.2 GHz, turbo 0.8 GHz (avg)
Poor: 81% Great: 110%
SPEED RANK: 31st / 1144
Gaming
Gaming 96%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
258,615 User Benchmarks
Best Bench: 103% Base clock 4 GHz, turbo 4.9 GHz (avg)
Worst Bench: 75% Base clock 4 GHz, turbo 0.9 GHz (avg)
Poor: 75% Great: 103%
SPEED RANK: 46th / 1144
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 90%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed
95.8 % Slightly faster effective speed.
+8%
88.6 %
SC Mixed
Avg. Single Core Mixed Speed
136 Pts Slightly faster single-core speed.
+8%
126 Pts
QC Mixed
Avg. Quad Core Mixed Speed
466 Pts Slightly faster quad-core speed.
+8%
431 Pts
MC Mixed
Avg. Multi Core Mixed Speed
719 Pts Slightly faster multi-core speed.
+8%
664 Pts
SC Mixed
OC Single Core Mixed Speed
152 Pts Slightly faster OC single-core speed.
+7%
142 Pts
QC Mixed
OC Quad Core Mixed Speed
556 Pts Slightly faster OC quad-core speed.
+7%
521 Pts
MC Mixed
OC Multi Core Mixed Speed
805 Pts Slightly faster OC multi-core speed.
+6%
758 Pts
Market Share
Based on 14,006,580 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.86 % Slightly higher market share.
+5%
1.77 %
Value
Value For Money
89.4 % +1% 88.8 %
User Rating
UBM User Rating
125 % Much more popular.
+52%
82 %
Price
Price (score)
$350 $290 Cheaper.
+17%
Age
Newest
24 Months Much more recent.
+41%
41 Months
TDP
Thermal Design Power (TDP)
91 Watts 91 Watts
Cores
CPU Processing Cores
4 cores 4 cores
Threads
CPU Processing Threads
8 threads 8 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz +5% 4 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Slightly faster turbo frequency.
+7%
4.2 GHz
SC Int
Single Core Integer Speed
148 Pts Slightly faster single-core int speed.
+6%
139 Pts
SC Float
Single Core Floating Point Speed
158 Pts Slightly faster single-core fp speed.
+7%
147 Pts
QC Int
Quad Core Integer Speed
541 Pts Slightly faster quad-core int speed.
+6%
508 Pts
QC Float
Quad Core Floating Point Speed
583 Pts Slightly faster quad-core fp speed.
+8%
542 Pts
MC Int
Multi Core Integer Speed
734 Pts Slightly faster multi-core int speed.
+7%
687 Pts
MC Float
Multi Core Floating Point Speed
867 Pts Slightly faster multi-core fp speed.
+8%
806 Pts
Series
CPU Architecture
Kaby Lake Skylake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
HD 630 HD 530
Launch Date
Launch Date
Q1'17 Q3'15
Cache
Cache
8 MB 8 MB SmartCache
Memory Types
Memory Types
DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 630 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
350.00 MHz 350 MHz

More specs » More specs »
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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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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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Processor Rankings (Price vs Performance) January 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

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CPUGPUSSD
Intel Core i7-8700K $368Nvidia GTX 1070 $350Samsung 850 Evo 250GB $63
AMD Ryzen 5 1600 $149Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $90
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
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Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Ultra Fit 32GB $12
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