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Intel
IntelBX80662I56600K
▲ 53149 ▼
  

2 Cores, 4 Threads @2.6 GHz, Haswell.
Release date ≈ Q3 2014.

VS
▲ 7428,938 ▼

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

Effective Speed 
+41%
Real World Speed
Performance profile from 358,225 user samples
Benchmark your CPU here
15,981 User Benchmarks
Best Bench: 64% Base clock 2.6 GHz, turbo 3.1 GHz (avg)
Worst Bench: 28% Base clock 2.6 GHz, turbo 0.8 GHz (avg)
Poor: 28% Great: 64%
SPEED RANK: 759th / 1442
Gaming
Gaming 51%
Yacht
Desktop
Desktop 58%
Gunboat
Workstation
Workstation 37%
Jet ski
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
Effective Speed
Effective CPU Speed 		51.3 % 72.4 % Much faster effective speed.
+41%
Average Score 
+63%
Memory
Avg. Memory Latency 		70.1 Pts 83.3 Pts Lower memory latency.
+19%
1-Core
Avg. Single Core Speed 		74.1 Pts 110 Pts Much faster single-core speed.
+48%
2-Core
Avg. Dual Core Speed 		129 Pts 218 Pts Much faster dual-core speed.
+69%
4-Core
Avg. Quad Core Speed 		189 Pts 352 Pts Hugely faster quad-core speed.
+86%
8-Core
Avg. Octa Core Speed 		194 Pts 373 Pts Hugely faster octa-core speed.
+92%
Overclocked Score 
+62%
Memory
OC Memory Latency 		89.7 Pts 95.2 Pts Slightly lower OC memory latency.
+6%
1-Core
OC Single Core Speed 		90.2 Pts 136 Pts Much faster OC single-core speed.
+51%
2-Core
OC Dual Core Speed 		166 Pts 269 Pts Much faster OC dual-core speed.
+62%
4-Core
OC Quad Core Speed 		238 Pts 455 Pts Hugely faster OC quad-core speed.
+91%
8-Core
OC Octa Core Speed 		238 Pts 476 Pts Hugely faster OC octa-core speed.
+100%
Value & Sentiment 
+1,220%
Market Share
Based on 67,717,627 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.5 % Insanely higher market share.
+2,400%
User Rating
UBM User Rating 		53 % 74 % Much more popular.
+40%
Nice To Haves 
+70%
Age
Newest 		116+ Months 104 Months More recent.
+10%
64-Core
OC Multi Core Speed 		238 Pts 484 Pts Hugely faster OC 64-core speed.
+103%
64-Core
Avg. Multi Core Speed 		194 Pts 378 Pts Hugely faster 64-core speed.
+95%
Specifications 
Launch Date
Launch Date 		Q2'14 Q3'15
Cache
Cache 		3 MB SmartCache 6 MB SmartCache
Lithography
Lithography 		22 nm 14 nm
Recommended Price
Recommended Customer Price 		$225.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		3.2 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® HD Graphics 4600 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency 		400 MHz 350 MHz
Graphics Output
Graphics Output 		eDP/DP/HDMI eDP/DP/HDMI/DVI
Graphics Video Max Memory
Graphics Video Max Memory 		2 GB 64 GB
Package Size
Package Size 		37.5mm x 37.5mm x 4.7mm 37.5mm x 37.5mm
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡ 		No Yes
TSX-NI
Intel® TSX-NI 		No Yes
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 »
Conclusion 
Average Bench 51.3%
Average Bench 72.4%
ADVERTISEMENT

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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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.
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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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  • - 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
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  • - 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
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 Frequently Asked Questions

Processors FAQ
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair 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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