COMPARE
CPU
RANKINGS
TEST
YOUR CPU
ADD TO PC
BUILD
Intel
IntelBX80684I99900KS
▲ 502 ▼
  

4 Cores, 8 Threads @3.60 GHz, Skylake.
Release date ≈ Q4 2017.

VS
▲ 561,719 ▼
  

8 Cores, 16 Threads @4.00 GHz, 127 W.
Release date ≈ Q4 2019.

Effective Speed 
+41%
Real World Speed
Performance profile from 15,542 user samples
Benchmark your CPU here
2,702 User Benchmarks
Best Bench: 76% Base clock 3.6 GHz, turbo 3.65 GHz (avg)
Worst Bench: 63% Base clock 3.6 GHz, turbo 3.55 GHz (avg)
Poor: 63% Great: 76%
SPEED RANK: 395th / 1442
Gaming
Gaming 70%
Battleship
Desktop
Desktop 73%
Battleship
Workstation
Workstation 60%
Gunboat
12,840 User Benchmarks
Best Bench: 105% Base clock 4 GHz, turbo 5.1 GHz (avg)
Worst Bench: 89% Base clock 4 GHz, turbo 5 GHz (avg)
Poor: 89% Great: 105%
SPEED RANK: 82nd / 1442
Gaming
Gaming 99%
Nuclear submarine
Desktop
Desktop 100%
Nuclear submarine
Workstation
Workstation 99%
Nuclear submarine
Effective Speed
Effective CPU Speed 		70.3 % 98.8 % Much faster effective speed.
+41%
Average Score 
+49%
Memory
Avg. Memory Latency 		73.3 Pts 92.8 Pts Lower memory latency.
+27%
1-Core
Avg. Single Core Speed 		105 Pts 147 Pts Much faster single-core speed.
+40%
2-Core
Avg. Dual Core Speed 		200 Pts 289 Pts Much faster dual-core speed.
+44%
4-Core
Avg. Quad Core Speed 		363 Pts 563 Pts Much faster quad-core speed.
+55%
8-Core
Avg. Octa Core Speed 		565 Pts 1016 Pts Much faster octa-core speed.
+80%
Overclocked Score 
+43%
Memory
OC Memory Latency 		79.3 Pts 97.7 Pts Lower OC memory latency.
+23%
1-Core
OC Single Core Speed 		118 Pts 155 Pts Much faster OC single-core speed.
+31%
2-Core
OC Dual Core Speed 		231 Pts 308 Pts Much faster OC dual-core speed.
+33%
4-Core
OC Quad Core Speed 		424 Pts 614 Pts Much faster OC quad-core speed.
+45%
8-Core
OC Octa Core Speed 		627 Pts 1148 Pts Hugely faster OC octa-core speed.
+83%
Value & Sentiment 
+6%
Market Share
Based on 67,712,926 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.02 %
User Rating
UBM User Rating 		50 % 56 % More popular.
+12%
Nice To Haves 
+120%
Age
Newest 		76+ Months 54+ Months More recent.
+29%
64-Core
OC Multi Core Speed 		627 Pts 1664 Pts Hugely faster OC 64-core speed.
+165%
64-Core
Avg. Multi Core Speed 		575 Pts 1531 Pts Hugely faster 64-core speed.
+166%
Specifications 
Launch Date
Launch Date 		Q3'17 Q4'19
Cache
Cache 		8.25 MB 16 MB Intel® Smart Cache
Instruction Set Extensions
Instruction Set Extensions 		Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Max Turbo Frequency
Max Turbo Frequency 		3.90 GHz 5.00 GHz
Bus Speed
Bus Speed 		0 GT/s QPI 8 GT/s
Max Memory Size
Max Memory Size (dependent on memory type) 		512 GB 128 GB
Memory Types
Memory Types 		DDR4 1600/1866/2133/2400/2666 DDR4-2666
Memory Channels
Max # of Memory Channels 		4 2
Memory Bandwidth
Max Memory Bandwidth 		85.3 GB/s 41.6 GB/s
ECC Memory Supported
ECC Memory Supported ‡ 		Yes No
Processor Graphics
Processor Graphics ‡ 		None Intel® UHD Graphics 630
Package Size
Package Size 		45mm x 52.5mm 37.5mm x 37.5mm
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		2.0 2
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No
PCI Express Revision
PCI Express Revision 		3.0 3
PCI Express Configurations
PCI Express Configurations ‡ 		x4, x8, x16 Up to 1x16, 2x8, 1x8+2x4
Max # of PCI Express Lanes
Max # of PCI Express Lanes 		48 16

More specs » More specs »
Conclusion 
Average Bench 70.3%
Average Bench 98.8%
ADVERTISEMENT

The Intel's specially binned i9-9900K, featuring 5GHz all core boost and base clock of 4GHz. This CPU is one of the most powerful Intel CPU in term of day-to-day and gaming performance but with TDP of 127W, bulky air cooler or 240mm AIO is recommended to make sure the CPU doesn't overheat, and open loop liquid cooling if you want to OC. [Jun '20 ColdSpy]

MORE DETAILS

User Builds 
2,702
12,840
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