IntelBX80662I56600K
Intel

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

  

4 Cores, 4 Threads @2.7 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

Real World Speed
Performance profile from 345,275 user samples
342,244 User Benchmarks
Best Bench: 85% Base clock 3.5 GHz, turbo 4.7 GHz (avg)
Worst Bench: 57% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 57% Great: 85%
SPEED RANK: 355th / 1442
Gaming
Gaming 72%
Battleship
Desktop
Desktop 80%
Battleship
Workstation
Workstation 55%
Yacht
3,031 User Benchmarks
Best Bench: 71% Base clock 2.7 GHz, turbo 3.3 GHz (avg)
Worst Bench: 51% Base clock 2.7 GHz, turbo 0.9 GHz (avg)
Poor: 51% Great: 71%
SPEED RANK: 511th / 1442
Gaming
Gaming 64%
Destroyer
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 47%
Yacht
Effective Speed
Effective CPU Speed
72.4 % Faster effective speed.
+12%
64.3 %
Memory
Avg. Memory Latency
83.3 Pts 83.7 Pts +0%
1-Core
Avg. Single Core Speed
110 Pts Much faster single-core speed.
+34%
81.9 Pts
2-Core
Avg. Dual Core Speed
218 Pts Much faster dual-core speed.
+42%
153 Pts
4-Core
Avg. Quad Core Speed
352 Pts Much faster quad-core speed.
+35%
261 Pts
8-Core
Avg. Octa Core Speed
373 Pts Much faster octa-core speed.
+40%
267 Pts
Memory
OC Memory Latency
95.2 Pts +3% 92.3 Pts
1-Core
OC Single Core Speed
136 Pts Much faster OC single-core speed.
+42%
95.9 Pts
2-Core
OC Dual Core Speed
269 Pts Much faster OC dual-core speed.
+48%
182 Pts
4-Core
OC Quad Core Speed
455 Pts Much faster OC quad-core speed.
+54%
296 Pts
8-Core
OC Octa Core Speed
476 Pts Much faster OC octa-core speed.
+61%
295 Pts
Market Share
Based on 67,695,335 CPUs tested
Market Share
Market Share (trailing 30 days)
0.46 % Insanely higher market share.
+∞%
0 %
User Rating
UBM User Rating
74 % Much more popular.
+45%
51 %
Age
Newest
104 Months More recent.
+16%
124+ Months
64-Core
OC Multi Core Speed
484 Pts Much faster OC 64-core speed.
+64%
296 Pts
64-Core
Avg. Multi Core Speed
378 Pts Much faster 64-core speed.
+42%
267 Pts
Launch Date
Launch Date
Q3'15 Q1'11
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX 2.0 SSE4.1/4.2, AVX
Lithography
Lithography
14 nm 32 nm
Recommended Price
Recommended Customer Price
$242.00 - $243.00 $205.00
Max Turbo Frequency
Max Turbo Frequency
3.9 GHz 3.7 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V DDR3 1066/1333
Memory Bandwidth
Max Memory Bandwidth
34.1 GB/s 21 GB/s
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 530 Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 850 MHz
Wireless Display
Intel® Wireless Display
Yes No
# of Displays Supported
# of Displays Supported ‡
3 2
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.1 GHz
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
3.0 2.0

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]

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Processor Rankings (Price vs Performance) April 2024 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 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 value for money 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
  • - 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $132Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $34Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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