Intel
IntelBX80662I56600K
  

4 Cores, 8 Threads @2.2 GHz, Crystal Well.
Release date ≈ Q4 2014.

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

Real World Speed
Performance profile from 340,623 user samples
1,523 User Benchmarks
Best Bench: 72% Base clock 2.2 GHz, turbo 3.15 GHz (avg)
Worst Bench: 45% Base clock 2.2 GHz, turbo 2.2 GHz (avg)
Poor: 45% Great: 72%
SPEED RANK: 442nd / 1323
Gaming
Gaming 64%
Destroyer
Desktop
Desktop 68%
Battle cruiser
Workstation
Workstation 51%
Yacht
339,100 User Benchmarks
Best Bench: 92% Base clock 3.5 GHz, turbo 4.8 GHz (avg)
Worst Bench: 63% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 63% Great: 92%
SPEED RANK: 161st / 1323
Gaming
Gaming 79%
Battleship
Desktop
Desktop 84%
Aircraft carrier
Workstation
Workstation 61%
Destroyer
Effective Speed
Effective CPU Speed
64.2 % 79.4 % Faster effective speed.
+24%
Memory
Avg. Memory Latency
74.5 Pts 86.1 Pts Lower memory latency.
+16%
1-Core
Avg. Single Core Mixed Speed
88.5 Pts 115 Pts Faster single-core speed.
+30%
2-Core
Avg. Dual Core Mixed Speed
173 Pts 226 Pts Much faster dual-core speed.
+31%
4-Core
Avg. Quad Core Mixed Speed
294 Pts 420 Pts Much faster quad-core speed.
+43%
8-Core
Avg. Octa Core Mixed Speed
421 Pts 427 Pts +1%
Memory
OC Memory Latency
84.1 Pts 95.6 Pts Lower OC memory latency.
+14%
1-Core
OC Single Core Mixed Speed
99.4 Pts 138 Pts Much faster OC single-core speed.
+39%
2-Core
OC Dual Core Mixed Speed
193 Pts 274 Pts Much faster OC dual-core speed.
+42%
4-Core
OC Quad Core Mixed Speed
361 Pts 529 Pts Much faster OC quad-core speed.
+47%
8-Core
OC Octa Core Mixed Speed
497 Pts 527 Pts Slightly faster OC octa-core speed.
+6%
Market Share
Based on 48,389,709 CPUs tested.
Market Share
Market Share (trailing 30 days)
0 % 0.49 % Insanely higher market share.
+∞%
User Rating
UBM User Rating
51 % 73 % Much more popular.
+43%
Age
Newest
83+ Months 76 Months Slightly more recent.
+8%
64-Core
OC Multi Core Mixed Speed
498 Pts 529 Pts Slightly faster OC 64-core speed.
+6%
64-Core
Avg. Multi Core Mixed Speed
417 Pts 430 Pts +3%
Launch Date
Launch Date
Q3'14 Q3'15
Cache
Cache
6 MB 6 MB SmartCache
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$434.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency
3.4 GHz 3.9 GHz
Bus Speed
Bus Speed
5 GT/s DMI2 8 GT/s DMI3
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3L 1333/1600 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Bandwidth
Max Memory Bandwidth
25.6 GB/s 34.1 GB/s
Processor Graphics
Processor Graphics ‡
Intel® Iris™ Pro Graphics 5200 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency
200 MHz 350 MHz
Graphics Output
Graphics Output
eDP/DP/HDMI/VGA eDP/DP/HDMI/DVI
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.2 GHz 1.15 GHz
Graphics Video Max Memory
Graphics Video Max Memory
2 GB 64 GB
Package Size
Package Size
37.5mm x 32mm x 1.65mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
PCI Express Revision
PCI Express Revision
3 3.0
PCI Express Configurations
PCI Express Configurations ‡
1x16 or 2x8 or 1x8 2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
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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]

MORE DETAILS

Processor Rankings (Price vs Performance) December 2021 CPU Rankings.

We calculate effective speed which measures real world performance for typical 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]

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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.

UserBenchmark of the month

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

 Frequently Asked Questions

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The Best.
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HDDRAMUSB
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