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Intel
IntelBX80662I56600K
▲ 501 ▼
  

8 Cores, 16 Threads @2.2 GHz, Sandy Bridge EP.
Release date ≈ Q2 2014.

VS
▲ 7428,939 ▼

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

Effective Speed 
+15%
Real World Speed
Performance profile from 343,562 user samples
Benchmark your CPU here
1,318 User Benchmarks
Best Bench: 71% Base clock 2.2 GHz, turbo 2.75 GHz (avg)
Worst Bench: 42% Base clock 2.2 GHz, turbo 2.2 GHz (avg)
Poor: 42% Great: 71%
SPEED RANK: 533rd / 1442
Gaming
Gaming 63%
Destroyer
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 55%
Gunboat
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 		62.9 % 72.4 % Faster effective speed.
+15%
Average Score 
+30%
Memory
Avg. Memory Latency 		77.5 Pts 83.3 Pts Slightly lower memory latency.
+7%
1-Core
Avg. Single Core Speed 		64.7 Pts 110 Pts Much faster single-core speed.
+70%
2-Core
Avg. Dual Core Speed 		132 Pts 218 Pts Much faster dual-core speed.
+65%
4-Core
Avg. Quad Core Speed 		262 Pts 352 Pts Much faster quad-core speed.
+34%
8-Core
Avg. Octa Core Speed 		466 Pts Faster octa-core speed.
+25% 		373 Pts
Overclocked Score 
+37%
Memory
OC Memory Latency 		87.6 Pts 95.2 Pts Slightly lower OC memory latency.
+9%
1-Core
OC Single Core Speed 		78.8 Pts 136 Pts Much faster OC single-core speed.
+73%
2-Core
OC Dual Core Speed 		156 Pts 269 Pts Much faster OC dual-core speed.
+72%
4-Core
OC Quad Core Speed 		303 Pts 455 Pts Much faster OC quad-core speed.
+50%
8-Core
OC Octa Core Speed 		568 Pts Faster OC octa-core speed.
+19% 		476 Pts
Value & Sentiment 
+2,324%
Market Share
Based on 67,764,976 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.47 % Insanely higher market share.
+4,600%
User Rating
UBM User Rating 		50 % 74 % Much more popular.
+48%
Nice To Haves 
+35%
Age
Newest 		119+ Months 104 Months More recent.
+13%
64-Core
OC Multi Core Speed 		729 Pts Much faster OC 64-core speed.
+51% 		484 Pts
64-Core
Avg. Multi Core Speed 		636 Pts Much faster 64-core speed.
+68% 		378 Pts
Specifications 
Launch Date
Launch Date 		Q1'12 Q3'15
Cache
Cache 		20 MB SmartCache 6 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography 		32 nm 14 nm
Recommended Price
Recommended Customer Price 		$1329.00 - $1333.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		3 GHz 3.9 GHz
Bus Speed
Bus Speed 		8 GT/s QPI 8 GT/s DMI3
Scalability
Scalability 		2S Only 1S Only
Max Memory Size
Max Memory Size (dependent on memory type) 		384 GB 64 GB
Memory Types
Memory Types 		DDR3 800/1066/1333/1600 DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Channels
Max # of Memory Channels 		4 2
Memory Bandwidth
Max Memory Bandwidth 		51.2 GB/s 34.1 GB/s
ECC Memory Supported
ECC Memory Supported ‡ 		Yes No
Package Size
Package Size 		52.5mm x 45.0mm 37.5mm x 37.5mm
Max CPU Configuration
Max CPU Configuration 		2 1
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		Yes No
vPro Tech
Intel® vPro™ Technology ‡ 		Yes No
Identity Protection Tech
Intel® Identity Protection Technology ‡ 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		40 16

More specs » More specs »
Conclusion 
Average Bench 62.9%
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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Gaming Desktop ProGaming

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

Processors FAQ
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $269Nvidia RTX 4060 $295Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $178Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair 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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