COMPARE
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
Intel
IntelBX80662I56600K
▲ 54541 ▼
  

4 Cores, 4 Threads @3 GHz, Ivy Bridge.
Release date ≤ Q4 2013.

VS
▲ 7428,938 ▼

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

Effective Speed 
+18%
Real World Speed
Performance profile from 394,170 user samples
Benchmark your CPU here
51,926 User Benchmarks
Best Bench: 69% Base clock 3 GHz, turbo 3 GHz (avg)
Worst Bench: 49% Base clock 3 GHz, turbo 3 GHz (avg)
Poor: 49% Great: 69%
SPEED RANK: 562nd / 1442
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 45%
Speed boat
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 		61.3 % 72.4 % Faster effective speed.
+18%
Average Score 
+36%
Memory
Avg. Memory Latency 		79.8 Pts 83.3 Pts +4%
1-Core
Avg. Single Core Speed 		76.4 Pts 110 Pts Much faster single-core speed.
+44%
2-Core
Avg. Dual Core Speed 		150 Pts 218 Pts Much faster dual-core speed.
+45%
4-Core
Avg. Quad Core Speed 		247 Pts 352 Pts Much faster quad-core speed.
+43%
8-Core
Avg. Octa Core Speed 		261 Pts 373 Pts Much faster octa-core speed.
+43%
Overclocked Score 
+49%
Memory
OC Memory Latency 		90.8 Pts 95.2 Pts +5%
1-Core
OC Single Core Speed 		82.8 Pts 136 Pts Much faster OC single-core speed.
+64%
2-Core
OC Dual Core Speed 		162 Pts 269 Pts Much faster OC dual-core speed.
+66%
4-Core
OC Quad Core Speed 		298 Pts 455 Pts Much faster OC quad-core speed.
+53%
8-Core
OC Octa Core Speed 		301 Pts 476 Pts Much faster OC octa-core speed.
+58%
Value & Sentiment 
+544%
Market Share
Based on 67,714,462 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.46 % Insanely higher market share.
+1,050%
User Rating
UBM User Rating 		54 % 74 % Much more popular.
+37%
Nice To Haves 
+40%
Age
Newest 		124+ Months 104 Months More recent.
+16%
64-Core
OC Multi Core Speed 		300 Pts 484 Pts Much faster OC 64-core speed.
+61%
64-Core
Avg. Multi Core Speed 		263 Pts 378 Pts Much faster 64-core speed.
+44%
Specifications 
Launch Date
Launch Date 		Q3'12 Q3'15
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography 		22 nm 14 nm
Recommended Price
Recommended Customer Price 		$182.00 - $187.00 $242.00 - $243.00
Max Turbo Frequency
Max Turbo Frequency 		3.2 GHz 3.9 GHz
Bus Speed
Bus Speed 		5 GT/s DMI 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification 		2011D PCG 2015D (130W)
Max Memory Size
Max Memory Size (dependent on memory type) 		32 GB 64 GB
Memory Types
Memory Types 		DDR3 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 2500 Intel® HD Graphics 530
Graphics Base Frequency
Graphics Base Frequency 		650 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.05 GHz 1.15 GHz
TSX-NI
Intel® TSX-NI 		No Yes
PCI Express Configurations
PCI Express Configurations ‡ 		up to 1x16, 2x8, 1x8 & 2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
Conclusion 
Average Bench 61.3%
Average Bench 72.4%
ADVERTISEMENT

Ripped it outta an old pre-built for free, runs great for what it is! [Jul '20 ProshotJake]

MORE DETAILS

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

User Builds 
51,926
342,244
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
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]

ADVERTISEMENT

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.

UserBenchmark of the month

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
AMD vs Intel: Gaming performance 2012-2021
How does IPC compare between AMD's Ryzen and Intel's Kaby Lake?
What is multi core mixed speed?
What is multi core integer speed?
What is multi core floating point speed?
What is single core mixed CPU speed?
What is quad core mixed CPU speed?
What is quad core floating point speed?
What is quad core integer speed?
What is single core floating point speed?
What is single core integer speed?
What is the GeekBench single core score?
What is a CPU?
What is the effective CPU speed index?
What is overclocking?
What is thermal design power (TDP)?
ALL FAQs »

 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 $184Nvidia 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) $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
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback