2 Cores, @3.16 GHz, Wolfdale.
Release date ≤ Q4 2013.

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

Real World Speed
Performance profile from 361,085 user samples
18,841 User Benchmarks
Best Bench: 48% Base clock 3.15 GHz, turbo 2.95 GHz (avg)
Worst Bench: 28% Base clock 3.15 GHz, turbo 2.95 GHz (avg)
Poor: 28% Great: 48%
SPEED RANK: 997th / 1426
Gaming 42%
Speed boat
Desktop 48%
Workstation 28%
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: 339th / 1426
Gaming 72%
Desktop 80%
Workstation 55%
Effective Speed
Effective CPU Speed
41.9 % 72.4 % Much faster effective speed.
Avg. Memory Latency
69.5 Pts 83.3 Pts Lower memory latency.
Avg. Single Core Speed
45.2 Pts 110 Pts Hugely faster single-core speed.
Avg. Dual Core Speed
83.3 Pts 218 Pts Hugely faster dual-core speed.
Avg. Quad Core Speed
85.2 Pts 352 Pts Hugely faster quad-core speed.
Avg. Octa Core Speed
87.5 Pts 373 Pts Hugely faster octa-core speed.
OC Memory Latency
80 Pts 95.2 Pts Lower OC memory latency.
OC Single Core Speed
51.2 Pts 136 Pts Hugely faster OC single-core speed.
OC Dual Core Speed
101 Pts 269 Pts Hugely faster OC dual-core speed.
OC Quad Core Speed
101 Pts 455 Pts Hugely faster OC quad-core speed.
OC Octa Core Speed
101 Pts 476 Pts Hugely faster OC octa-core speed.
Market Share
Based on 66,147,410 CPUs tested
Market Share
Market Share (trailing 30 days)
0.01 % 0.45 % Insanely higher market share.
Value For Money
51.6 % 93.2 % Hugely better value.
User Rating
UBM User Rating
54 % 74 % Much more popular.
Price (score)
$130 $111 Cheaper.
120+ Months 100 Months More recent.
OC Multi Core Speed
102 Pts 484 Pts Hugely faster OC 64-core speed.
Avg. Multi Core Speed
86.8 Pts 378 Pts Hugely faster 64-core speed.
Launch Date
Launch Date
Q1'08 Q3'15
6 MB L2 6 MB SmartCache
45 nm 14 nm
Recommended Price
Recommended Customer Price
$200.00 $242.00 - $243.00
Bus Speed
Bus Speed
1333 MHz FSB 8 GT/s DMI3
Turbo Boost Tech
Intel® Turbo Boost Technology ‡
No 2.0
AES New Instructions
Intel® AES New Instructions
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No

More specs » More specs »

Beast processor during its time, when single core performance was king, but also software support, starting with Windows itself, was a major factor, it's crazy because all the benches at the time showed the e8500 beating the Phenom II 965 in gaming( the reason I was building a system) at the time, especially when it came to OC. Crazy what the benches are now, if you have Phenom II now with a mobo that works it may be useful (but they aren't very power efficient) but I burnt my mobo out overclocking so the point of what either processor could do 5 much less 10 years later is pretty moot. [Feb '21 qnytech1]


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]


Processor Rankings (Price vs Performance) December 2023 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]


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 freeware 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 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
  • - 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

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Intel Core i5-12600K $189Nvidia RTX 3060-Ti $340Samsung 860 Evo 250GB $49
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