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

4 Cores, 4 Threads
@3.5GHz Skylake (2015)

Real World Speed
Performance profile from 259,306 user samples
150,776 User Benchmarks
Best Bench: 110% Base clock 4.2 GHz, turbo 5 GHz (avg)
Worst Bench: 87% Base clock 4.2 GHz, turbo 4.4 GHz (avg)
Poor: 87% Great: 110%
SPEED RANK: 16th / 1059
Gaming 99%
Nuclear submarine
Desktop 100%
Nuclear submarine
Workstation 73%
108,530 User Benchmarks
Best Bench: 107% Base clock 3.5 GHz, turbo 4.95 GHz (avg)
Worst Bench: 67% Base clock 3.5 GHz, turbo 1.15 GHz (avg)
Poor: 67% Great: 107%
SPEED RANK: 33rd / 1059
Gaming 88%
Aircraft carrier
Desktop 86%
Aircraft carrier
Workstation 54%
Effective Speed
Effective CPU Speed
98.9 % Slightly faster effective speed.
88.1 %
SC Mixed
Avg. Single Core Mixed Speed
139 Pts Faster single-core speed.
120 Pts
QC Mixed
Avg. Quad Core Mixed Speed
485 Pts Slightly faster quad-core speed.
459 Pts
MC Mixed
Avg. Multi Core Mixed Speed
735 Pts Much faster multi-core speed.
470 Pts
SC Mixed
OC Single Core Mixed Speed
152 Pts Slightly faster OC single-core speed.
144 Pts
QC Mixed
OC Quad Core Mixed Speed
558 Pts 563 Pts +1%
MC Mixed
OC Multi Core Mixed Speed
812 Pts Much faster OC multi-core speed.
564 Pts
Market Share
Based on 7,963,408 CPUs tested.
Market Share
Market Share (trailing 30 days)
2.37 % Hugely higher market share.
1.13 %
Value For Money
99.1 % +4% 95.7 %
User Rating
UBM User Rating
132 % Much more popular.
89 %
Price (score)
$290 $234 Cheaper.
14 Months Much more recent.
31 Months
Thermal Design Power (TDP)
91 Watts 91 Watts
CPU Processing Cores
4 cores 4 cores
CPU Processing Threads
8 threads Hugely higher thread count.
4 threads
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4.2 GHz Faster base frequency.
3.5 GHz
Turbo Clock
Turbo Clock Speed
4.5 GHz Faster turbo frequency.
3.9 GHz
SC Int
Single Core Integer Speed
150 Pts Slightly faster single-core int speed.
139 Pts
SC Float
Single Core Floating Point Speed
156 Pts +5% 149 Pts
QC Int
Quad Core Integer Speed
546 Pts 550 Pts +1%
QC Float
Quad Core Floating Point Speed
578 Pts 582 Pts +1%
MC Int
Multi Core Integer Speed
750 Pts Much faster multi-core int speed.
550 Pts
MC Float
Multi Core Floating Point Speed
858 Pts Much faster multi-core fp speed.
586 Pts
CPU Architecture
Kaby Lake (2017) Skylake (2015)
Motherboard Socket
Integrated Graphics
HD 630 HD 530
Launch Date
Launch Date
Q1'17 Q3'15
8 MB 6 MB SmartCache
Recommended Price
Recommended Customer Price
$339.00 - $350.00 $242.00 - $243.00
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
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No

More specs » More specs »

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]


The Intel Core i5-6600K is based on the new "Skylake" 14nm manufacturing process. Sporting 4 physical cores with base/turbo clocks of 3.5/3.9 GHz the 6600K and its predecessor, the 4690K share the same basic configuration and disappointingly, offer similar performance. Comparing the 6600K and 6700K shows that the 6700K has faster multi and single core performance. The improved multi core performance is due to Hyperthreading which is the key differentiator for the i7-6700K. The gap in single core performance can largely be eliminated by overclocking the i5-6600K so although the stock effective speed is significantly higher on the 6700K, this gap diminishes significantly when both processors are overclocked. At a 30% discount, the 6600K is the better value gaming CPU. [Aug '15 CPUPro]


Processor Rankings (Price vs Performance) March 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]


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
  • - 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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Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $146
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Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
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