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 422,384 user samples
191,889 User Benchmarks
Best Bench: 110% Base clock 4.2 GHz, turbo 5.3 GHz (avg)
Worst Bench: 80% Base clock 4.2 GHz, turbo 4.2 GHz (avg)
Poor: 80% Great: 110%
SPEED RANK: 25th / 1132
Gaming
Gaming 95%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 71%
Battleship
230,495 User Benchmarks
Best Bench: 102% Base clock 4 GHz, turbo 4.7 GHz (avg)
Worst Bench: 76% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 76% Great: 102%
SPEED RANK: 37th / 1132
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 90%
Nuclear submarine
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed
95.4 % Slightly faster effective speed.
+7%
88.9 %
SC Mixed
Avg. Single Core Mixed Speed
137 Pts Slightly faster single-core speed.
+9%
126 Pts
QC Mixed
Avg. Quad Core Mixed Speed
462 Pts Slightly faster quad-core speed.
+7%
432 Pts
MC Mixed
Avg. Multi Core Mixed Speed
716 Pts Slightly faster multi-core speed.
+7%
669 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
550 Pts Slightly faster OC quad-core speed.
+7%
514 Pts
MC Mixed
OC Multi Core Mixed Speed
812 Pts Slightly faster OC multi-core speed.
+7%
757 Pts
Market Share
Based on 11,636,704 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.32 % Higher market share.
+17%
1.98 %
Value
Value For Money
89.1 % +1% 87.9 %
User Rating
UBM User Rating
133 % Much more popular.
+62%
82 %
Price
Price (score)
$350 $300 Slightly cheaper.
+14%
Age
Newest
21 Months Much more recent.
+45%
38 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.
+7%
138 Pts
SC Float
Single Core Floating Point Speed
157 Pts Slightly faster single-core fp speed.
+7%
147 Pts
QC Int
Quad Core Integer Speed
538 Pts Slightly faster quad-core int speed.
+7%
501 Pts
QC Float
Quad Core Floating Point Speed
577 Pts Slightly faster quad-core fp speed.
+8%
535 Pts
MC Int
Multi Core Integer Speed
748 Pts Slightly faster multi-core int speed.
+8%
693 Pts
MC Float
Multi Core Floating Point Speed
866 Pts Slightly faster multi-core fp speed.
+7%
807 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) October 2018 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 $380Nvidia GTX 1070 $345Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $350AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3000 C15 2x8GB $147SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $145SanDisk Ultra Fit 32GB $12
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