Intel Core i9-11900KB vs Intel Core i9-9920X

Processor comparisons 12-06-2021

   Let's say you are thinking about choosing a CPU, you will be able to make a choice after reading the detailed tests Intel Core i9-11900KB vs Intel Core i9-9920X and decide which is better for games or normal use for rendering, video editing, machine learning, programming, streaming. Here you can find all information from different benchmarks or real streaming and video editing tests. A careful analysis of all the specifications, to make it easier to understand, is summarized in the table.
   From the video comparison, you can get the results of parallel examination in synthetic type tests like VeraCrypt, DaVinci Resolve Studio, SuperPi, Furmark, Blender, Handbrake, Gears 5, World of Tanks enCore Benchmark, Dolphin Emulator, PCMark 10, 7zip, UserBenchmark, AIDA64, MATLAB, RealBench, Cinebench 23 (20, 15), Blender, WPrime, Prime95, PassMark, 3DMark, GeekBench 6, 5.2.
   And how good the processors are in games:

Red Dead Redemption 2
Rainbow Six Siege
Overwatch
Watch Dogs Legion
Grand Theft Auto V
Last Man Standing
Assassin's Creed Valhalla
DOOM: Eternal
Cyberpunk 2077
Valorant
Death Stranding
Borderlands 3
Valheim
Fortnite
Apex Legends
Fallout 76
World of Warcraft: Shadowlands
Halo Infinite
Call of Duty: Modern Warfare and Warzone

After reading the results of all benchmarks and videos, you can already make an informed decision about which processor is better to buy for gaming Intel Core i9-9920X or Intel Core i9-11900KB.

Summary benchmark results

As a percentage of the maximum value based on a sample from the entire base of all processors
Processor Benchmark

Core i9-11900KB

58%

Core i9-9920X

57%

This parameter shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, Core i9-11900KB is 1% better than Core i9-9920X. The data source is several popular tests. More detailed information of the benchmarks is below.

Gaming performance
Summary result of all game benchmarks.

Core i9-11900KB

57%

Core i9-9920X

58%

For the maximum in this test, the results of the most powerful processor in the site database are taken. And of course, this is a server processor, on which no one will run games. Because this processor costs several tens of thousands of dollars. Therefore, if you think that the selected CPU has a small game result, just look at the FPS that it produces in real games in the final table below.
List of less popular games in which processors were compared: Shadow of the Tomb Raider, Forza Horizon 4, Half-Life: Alyx, Resident Evil 7 Biohazard, Hitman 3, Battlefield V, DOTA 2A, NBA 2K20, Ghostrunner, The Witcher 3: Wild Hunt, Monster Hunter World, PlayerUnknown's Battlegrounds (PUBG), Control, Counter-Strike: Global Offensive (CS GO), League of Legends (LOL), Metro Exodus, Microsoft Flight Simulator, Horizon Zero Dawn.

Gaming benchmark

Fortnite	101.4	102.9
Valorant	115.2	116.9
Cyberpunk 2077	64.5	65.5
Apex Legends	108.3	109.9
Call of Duty Warzone	86.4	87.7
Overwatch	93.3	94.7
Red Dead Redemption 2	79.5	80.6
DOOM Eternal	57.6	58.4
Warzone	89.9	91.2
Assassin's Creed	96.8	98.2
Valheim	95.6	97.0

The numbers in this table indicate the maximum FPS that was received on the device with the corresponding processor. Depending on the configuration of the computer (RAM size and Video Card) and graphics quality settings (Ultra, Medium, Normal), the results may differ quite significantly. We recommend that you better study the results of the Cinebench, GeekBench and Passmark becnmarks.
The tested computers not only did they have different video cards and different amounts of RAM. But users also tested them at different screen resolutions: 2K, FullHD or 4K. So the game benchmark data is approximate. But all video cards met the average system requirements of games. You will get more accurate information about how powerful the processor will be in games, if you get acquainted with the benchmarks that are made with the same video card that is installed in your computer.

Power consumption

Core i9-11900KB

104%

Core i9-9920X

25%

To make a final resolution on which processor is better, you should also consider the generation of its core. The newer the processor generation, the better its performance in games and benchmarks, as well as its energy efficiency. In this case the Core i9-11900KB is more energy efficient than the Core i9-9920X since it has less power consumption: 65W vs. 165W. Power consumption is especially important for laptops. Also, when choosing a processor cooling system, you need to know its TDP. It is necessary to calculate so that the TDP data specified in the cooler specification is greater than the TDP of the compared processor.

Software benchmarks

If you plan to use the processor not only for gaming, but also for streaming, video rendering or video editing, programming, machine learning, then the main parameter for you is its performance in multi-threaded mode. In this mode, to reach maximum performance, the processor uses all cores and threads that it has. You will learn this data from the benchmark tables below. Before using the data from these tests, be sure to make sure that the program that you are going to use on your computer can work in multi-threaded mode. Because there are still many programs that use only one core to run, and all the benefit of multi-core mode turns out to be unnecessary.

Cinebench 23, 20 an 15
The results of this benchmark show Single-threaded and Multi-threaded CPU performance

	Intel Core i9-11900KB	Intel Core i9-9920X
Cinbench 15 Single-core	296	197
Cinbench 15 Multi-core	2680	2245
Cinbench 20 Single-core	662	455
Cinbench 20 Multi-core	5957	5179
Cinbench 23 Single-core	1720	1484
Cinbench 23 Multi-core	17143	14791

Passmark
This popular benchmark displays Multi-threaded and Single-threaded processor performance

	Intel Core i9-11900KB	Intel Core i9-9920X
Single-Core	3955	2650
Multi-Core	29307	25286

GeekBench 6, 5.2
This benchmark shows Multi-threaded and Single-threaded processor performance

	Intel Core i9-11900KB	Intel Core i9-9920X
Single-Core	2041	1282
Multi-Core	13142	14563

Comparison of specifications

In the specification comparison table, the processor release date and overclocking capability will be the most useful. The newer the processor, the longer it will last you. And the easier it will be to upgrade the system in the future. The same can be said about overclocking. If the processor can be overclocked, increasing its performance, then it will still be able to produce maximum FPS even in the newest games. Accordingly, you do not need to buy a new CPU to enjoy the games any longer. The savings are obvious!

	Intel Core i9-11900KB	Intel Core i9-9920X
Announcement date	February 21, 2021	October 01, 2018
Type	Desktop	Desktop
Socket	FCBGA1787	FCLGA2066
Core name	Tiger Lake	Skylake
Architecture	x86	x86
Generation	11	9
Turbo Frequency	5.3 MHz	4.5 MHz
Frequency	3.3 MHz	3.5 MHz
Cores	8	12
Threads	16	24
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	10 nm	14 nm
Transistors count	9800 millions	8600 millions
Power consumption (TDP)	65 W	165 W
Memory type	Up to 3200 MT/s	DDR4-2666
Max. Memory	128 Gb	128 Gb
Memory Frequency	3200
Memory bandwidth	45.8 GB/s	85 GB/s
L1 cache
L2 cache	4 MB
L3 cache	24 MB	19.25 MB
Overclocking	No	Yes
Supports ECC	No	No
Part number

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Core i9-9920X is 5% better than Core i9-11900KB in terms of CPU frequency. Another difference is that Core i9-9920X has 4 more core than Core i9-11900KB. Also keep in mind that high CPU frequency affects battery life through power consumption (relevant for laptops).

Result:
The number of parameters for which Intel Core i9-11900KB is better: 18
The number of parameters for which Intel Core i9-9920X is better: 17
Although it should be understood that all the figures in the article above do not mean that taking them into account you should undividedly trust a simple quantitative comparison. Be sure to watch benchmarks video and read the opinion of of people who bought Intel Core i9-11900KB and Intel Core i9-9920X before making a selection which CPU to buy for gaming and which not.

Intel Core i9-11900KB - all data

• Cinebench r15 score
• Cinebench r20 score
• Cinebench r23 score
• GeekBench 6, 5.2 score

• Intel Core i9-11900KB specs and review.

• Intel Core i9-9920X specs and review.