2 Cores, @3.16 GHz, Wolfdale.
Release date ≤ Q4 2013.


4 Cores, 4 Threads @3.5GHz, Skylake.
Release date: Q3 2015.

Real World Speed
Performance profile from 230,569 user samples
13,719 User Benchmarks
Best Bench: 29% Base clock 4.6 GHz
Worst Bench: 17% Base clock 0.95 GHz, turbo 0.95 GHz (avg)
Poor: 17% Great: 29%
SPEED RANK: 794th / 1206
Gaming 26%
Desktop 32%
Sail boat
Workstation 12%
Tree trunk
216,850 User Benchmarks
Best Bench: 93% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 56% Base clock 3.5 GHz, turbo 4.2 GHz (avg)
Poor: 56% Great: 93%
SPEED RANK: 76th / 1206
Gaming 76%
Desktop 79%
Workstation 42%
Speed boat
Effective Speed
Effective CPU Speed
26.1 % 76.3 % Hugely faster effective speed.
Avg. Single Core Mixed Speed
53.4 Pts 116 Pts Hugely faster single-core speed.
Avg. Dual Core Mixed Speed
101 Pts 230 Pts Hugely faster dual-core speed.
Avg. Quad Core Mixed Speed
103 Pts 425 Pts Hugely faster quad-core speed.
Avg. Octa Core Mixed Speed
104 Pts 433 Pts Hugely faster octa-core speed.
OC Single Core Mixed Speed
59.2 Pts 140 Pts Hugely faster OC single-core speed.
OC Dual Core Mixed Speed
116 Pts 277 Pts Hugely faster OC dual-core speed.
OC Quad Core Mixed Speed
119 Pts 534 Pts Hugely faster OC quad-core speed.
OC Octa Core Mixed Speed
120 Pts 534 Pts Hugely faster OC octa-core speed.
Market Share
Based on 22,582,007 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.06 % 0.74 % Insanely higher market share.
Value For Money
35.6 % 83.6 % Hugely better value.
User Rating
UBM User Rating
58 % 105 % Hugely more popular.
Price (score)
$90 Much cheaper.
72+ Months 52 Months More recent.
OC Multi Core Mixed Speed
121 Pts 541 Pts Hugely faster OC 64-core speed.
Avg. Multi Core Mixed Speed
105 Pts 437 Pts Hugely faster 64-core speed.
Launch Date
Launch Date
Q1'08 Q3'15
6 MB L2 6 MB SmartCache
45 nm 14 nm
Recommended Price
Recommended Customer Price
$200.00 $242.00 - $243.00
Bus Speed
Bus Speed
1333 MHz FSB 8 GT/s DMI3
Turbo Boost Tech
Intel® Turbo Boost Technology
No 2.0
AES New Instructions
Intel® AES New Instructions
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No

More specs » More specs »

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) December 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical gamers and desktop users. Effective speed is adjusted by current prices to yield a value for money rating. 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.
  • 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
  • - 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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Intel Core i5-9400F $148Nvidia GTX 1660S (Super) $270Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $150
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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