IntelBX80684I99900K
IntelBX80677I77740X

8 Cores, 16 Threads @3.6GHz, Coffee Lake.
Release date: Q4 2018.

VS
About

4 Cores, 8 Threads @4.30 GHz, Kaby Lake.
Release date ≈ Q3 2017.

Real World Speed
Performance profile from 192,542 user samples
188,924 User Benchmarks
Best Bench: 106% Base clock 3.6 GHz, turbo 5 GHz (avg)
Worst Bench: 86% Base clock 3.6 GHz, turbo 1.6 GHz (avg)
Poor: 86% Great: 106%
SPEED RANK: 10th / 1251
Gaming
Gaming 98%
Nuclear submarine
Desktop
Desktop 99%
Nuclear submarine
Workstation
Workstation 98%
Nuclear submarine
3,618 User Benchmarks
Best Bench: 99% Base clock 4.3 GHz, turbo 5 GHz (avg)
Worst Bench: 78% Base clock 4.3 GHz, turbo 1.95 GHz (avg)
Poor: 78% Great: 99%
SPEED RANK: 37th / 1251
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 75%
Battleship
Effective Speed
Effective CPU Speed
98.3 % Slightly faster effective speed.
+10%
89.4 %
Memory
Avg. Memory Latency
93.5 Pts +1% 92.9 Pts
1-Core
Avg. Single Core Mixed Speed
142 Pts +4% 136 Pts
2-Core
Avg. Dual Core Mixed Speed
281 Pts Slightly faster dual-core speed.
+7%
263 Pts
4-Core
Avg. Quad Core Mixed Speed
553 Pts Faster quad-core speed.
+19%
465 Pts
8-Core
Avg. Octa Core Mixed Speed
1016 Pts Much faster octa-core speed.
+46%
694 Pts
Memory
OC Memory Latency
97.5 Pts 97.5 Pts
1-Core
OC Single Core Mixed Speed
154 Pts 154 Pts
2-Core
OC Dual Core Mixed Speed
308 Pts +2% 302 Pts
4-Core
OC Quad Core Mixed Speed
615 Pts Faster OC quad-core speed.
+11%
554 Pts
8-Core
OC Octa Core Mixed Speed
1169 Pts Much faster OC octa-core speed.
+46%
801 Pts
Market Share
Based on 30,113,434 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.28 % Insanely higher market share.
+6,300%
0.02 %
Value
Value For Money
84.3 % +0% 83.9 %
User Rating
UBM User Rating
190 % Hugely more popular.
+217%
60 %
Price
Price (score)
$486 $350 Cheaper.
+28%
Age
Newest
20 Months Much more recent.
+44%
36+ Months
64-Core
OC Multi Core Mixed Speed
1623 Pts Hugely faster OC 64-core speed.
+103%
801 Pts
64-Core
Avg. Multi Core Mixed Speed
1463 Pts Hugely faster 64-core speed.
+108%
703 Pts
Launch Date
Launch Date
Q4'18 Q2'17
Cache
Cache
16 MB SmartCache 8 MB
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Recommended Price
Recommended Customer Price
$488.00 - $499.00 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency
5.00 GHz 4.50 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2017X
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 None

More specs » More specs »
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The Intel i9-9900K is an 8 core, 16 thread, unlocked 9th generation Coffee Lake processor. It has a base / boost clocks of 3.6 / 4.7 GHz and a single-core boost of 5.0 GHz (the highest frequency achieved yet from this class of Intel CPU). It features 16 MB of cache, a 95W TDP and Intel UHD 630 graphics. The 9900K is compatible with the new Z390 chipset, and subject to a BIOS update, is also compatible with the older Z370 chipset. Aimed at users who do not wish to compromise, the i9-9900K offers the best gaming and desktop experience available at any price. Heavy workstation users should consider the Ryzen 9 3900X which is similarly priced. Comparing the overclocked 3900X shows that it is just 10% worse for gaming and desktop (sub octa-core) but around 40% better for 64-core computations. Gamers should consider the 9700K which offers identical overclocked gaming performance at a $100 USD discount. [Oct '18 CPUPro]

MORE DETAILS

Kaby Lake-X CPUs is probably one of the Intel's most embarrassing release ever for their HEDT platform. Requires X299 motherboard and only offered 16 PCIe lanes whilst being only little better than i7-7700K. [Oct '19 ColdSpy]

MORE DETAILS

Processor Rankings (Price vs Performance) July 2020 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 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.

UserBenchmark of the month

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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
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HDDRAMUSB
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