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 361,757 user samples
205,468 User Benchmarks
Best Bench: 106% Base clock 4 GHz, turbo 4.6 GHz (avg)
Worst Bench: 75% Base clock 4 GHz, turbo 0.8 GHz (avg)
Poor: 75% Great: 106%
SPEED RANK: 33rd / 1110
Gaming
Gaming 91%
Nuclear submarine
Desktop
Desktop 92%
Nuclear submarine
Workstation
Workstation 67%
Battle cruiser
156,289 User Benchmarks
Best Bench: 112% Base clock 4.2 GHz, turbo 5.1 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 4.5 GHz (avg)
Poor: 87% Great: 112%
SPEED RANK: 17th / 1110
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
UFO
Workstation
Workstation 73%
Battleship
Effective Speed
Effective CPU Speed
90.6 % 99.3 % Slightly faster effective speed.
+10%
SC Mixed
Avg. Single Core Mixed Speed
128 Pts 140 Pts Slightly faster single-core speed.
+9%
QC Mixed
Avg. Quad Core Mixed Speed
443 Pts 486 Pts Slightly faster quad-core speed.
+10%
MC Mixed
Avg. Multi Core Mixed Speed
671 Pts 737 Pts Slightly faster multi-core speed.
+10%
SC Mixed
OC Single Core Mixed Speed
144 Pts 154 Pts Slightly faster OC single-core speed.
+7%
QC Mixed
OC Quad Core Mixed Speed
532 Pts 565 Pts Slightly faster OC quad-core speed.
+6%
MC Mixed
OC Multi Core Mixed Speed
766 Pts 812 Pts Slightly faster OC multi-core speed.
+6%
Market Share
Based on 9,332,833 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.78 % 2.45 % Much higher market share.
+38%
Value
Value For Money
85.7 % 101 % Better value.
+18%
User Rating
UBM User Rating
69 % 117 % Much more popular.
+70%
Price
Price (score)
$339 $278 Cheaper.
+18%
Age
Newest
34 Months 17 Months Much more recent.
+50%
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 GHz 4.2 GHz +5%
Turbo Clock
Turbo Clock Speed
4.2 GHz 4.5 GHz Slightly faster turbo frequency.
+7%
SC Int
Single Core Integer Speed
142 Pts 151 Pts Slightly faster single-core int speed.
+6%
SC Float
Single Core Floating Point Speed
147 Pts 157 Pts Slightly faster single-core fp speed.
+7%
QC Int
Quad Core Integer Speed
523 Pts 554 Pts Slightly faster quad-core int speed.
+6%
QC Float
Quad Core Floating Point Speed
551 Pts 586 Pts Slightly faster quad-core fp speed.
+6%
MC Int
Multi Core Integer Speed
711 Pts 751 Pts Slightly faster multi-core int speed.
+6%
MC Float
Multi Core Floating Point Speed
809 Pts 858 Pts Slightly faster multi-core fp speed.
+6%
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) June 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance and price.
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 (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.

 Frequently Asked Questions

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CPUGPUSSD
AMD Ryzen 5 1600 $170Nvidia GTX 1070 $420Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $138
Intel Core i5-8600K $238AMD RX 480 $280Samsung 850 Pro 256GB $121
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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