IntelBX80662I56600K
IntelBX8070811900K

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

8 Cores, 16 Threads @3.5GHz, Rocket Lake.
Release date: Q1 2021.

Real World Speed
Performance profile from 386,563 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
44,319 User Benchmarks
Best Bench: 112% Base clock 3.5 GHz, turbo 5.2 GHz (avg)
Worst Bench: 94% Base clock 3.5 GHz, turbo 3.5 GHz (avg)
Poor: 94% Great: 112%
SPEED RANK: 63rd / 1442
Gaming
Gaming 103%
UFO
Desktop
Desktop 105%
UFO
Workstation
Workstation 104%
UFO
Effective Speed
Effective CPU Speed
72.4 % 103 % Much faster effective speed.
+43%
Memory
Avg. Memory Latency
83.3 Pts 87.4 Pts +5%
1-Core
Avg. Single Core Speed
110 Pts 171 Pts Much faster single-core speed.
+55%
2-Core
Avg. Dual Core Speed
218 Pts 333 Pts Much faster dual-core speed.
+53%
4-Core
Avg. Quad Core Speed
352 Pts 638 Pts Hugely faster quad-core speed.
+81%
8-Core
Avg. Octa Core Speed
373 Pts 1114 Pts Hugely faster octa-core speed.
+199%
Memory
OC Memory Latency
95.2 Pts 95.6 Pts +0%
1-Core
OC Single Core Speed
136 Pts 183 Pts Much faster OC single-core speed.
+35%
2-Core
OC Dual Core Speed
269 Pts 360 Pts Much faster OC dual-core speed.
+34%
4-Core
OC Quad Core Speed
455 Pts 700 Pts Much faster OC quad-core speed.
+54%
8-Core
OC Octa Core Speed
476 Pts 1279 Pts Hugely faster OC octa-core speed.
+169%
Market Share
Based on 67,695,335 CPUs tested
Market Share
Market Share (trailing 30 days)
0.46 % Higher market share.
+18%
0.39 %
Value
Value For Money
102 % 105 % +3%
User Rating
UBM User Rating
74 % 75 % +1%
Price
Price (score)
$81 Much cheaper.
+69%
$265
Age
Newest
104 Months 36 Months Much more recent.
+65%
TDP
Thermal Design Power (TDP)
91 Watts More energy efficient.
+27%
125 Watts
Cores
CPU Processing Cores
4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads
4 threads 16 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.5 GHz 3.5 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz 5.3 GHz Much faster turbo frequency.
+36%
64-Core
OC Multi Core Speed
484 Pts 1734 Pts Hugely faster OC 64-core speed.
+258%
64-Core
Avg. Multi Core Speed
378 Pts 1600 Pts Hugely faster 64-core speed.
+323%
Series
CPU Architecture
Skylake Rocket Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1200
Graphics
Integrated Graphics
HD 530 UHD 750
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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

The i9-11900K is the fastest CPU in Intel’s 11th Gen Rocket Lake-S lineup which brings higher IPC (early samples indicate +19%) and 50% stronger integrated graphics. There are also 500 series chipset improvements including: 20 PCIe4 CPU lanes (up from 16) and USB 3.2 Gen 2x2 (20 Gbps up from 10 Gbps). Rocket Lake’s IPC uplift translates to around a 10% faster Effective Speed than both Intel's 10th Gen and AMD’s 5000 series. Despite Intel’s performance lead, AMD continues to outsell Intel. Given the scale of Intel's operation, it’s inexplicable that their marketing remains so neglected. Little effort is made to counter widespread disinformation such as: “it uses too much electricity” or the classic: “it needs more cores”. Intel’s marketing samples are routinely distributed to reviewers that appear better incentivized to bury Intel's products rather than review them. Not enabling XMP or only testing with BIOS power limits enabled is akin to leaving the handbrake on during a race. Mind-numbing “scientific” and rendering benchmarks are presented as gospel. Different games, mostly unplayed by real users, are cherry picked for each “review”. When it's convenient, canned game benchmarks are chosen such as Ulletical’s CSGO which runs at nearly double the in-game fps. Credible benchmark data, which necessarily includes replicable video footage from popular games, is the exception rather than the rule. At every release, AMD’s marketers coordinate narratives to ensure another feast of blue blubber. Nonetheless, towards the end of 2021, Intel’s Golden Cove is due to offer an additional 20-30% performance increase. At that time, with a net 30-40% performance lead, Intel will probably regain significant market share despite AMD's class-leading marketing. In the meantime, most PC gamers need look no further than the 11400F. [Mar '21 CPUPro]

MORE DETAILS

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

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HDDRAMUSB
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WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
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