Intel Core i9-11900KB vs Intel Core i9-11900KF

Processor comparisons   12-06-2021
   Let's say you can't decide which processor to buy, you can make a choice after reading the full tests Intel Core i9-11900KB vs Intel Core i9-11900KF and see which is better for games or simple use for programming, machine learning, rendering, streaming, video editing. Here is all information from real streaming and video editing tests or several benchmarks. A thorough analysis of all the technical characteristics, to make it easier to understand, is presented in the form of the table.
   From the comparison video, you can get the results of parallel examination in special test applications like UserBenchmark, MATLAB, PassMark, World of Tanks enCore Benchmark, Prime95, DaVinci Resolve Studio, Gears 5, Blender, Cinebench 23 (20, 15), Dolphin Emulator, Handbrake, 3DMark, SuperPi, PCMark 10, VeraCrypt, WPrime, Blender, GeekBench 6, 5.2, AIDA64, 7zip, RealBench, Furmark.
   And how good the CPUs are in games:

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

After reading the results of all benchmarks and videos, you can already make an briefed decision about which CPU is better to buy for gaming Intel Core i9-11900KF 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 i9-11900KF

58%

Gaming performance
Summary result of all game benchmarks.

Core i9-11900KB

57%

Core i9-11900KF

54%

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 the cost of this processor reaches several tens of thousands of dollars. Therefore, if you think that the selected CPU has a little game result, look at the FPS that it produces in real games in the final table below.
List of other games in which CPU comparisons were performed: Half-Life: Alyx, The Witcher 3: Wild Hunt, DOTA 2A, Monster Hunter World, Resident Evil 7 Biohazard, Horizon Zero Dawn, NBA 2K20, Control, Microsoft Flight Simulator, Ghostrunner, Metro Exodus, Counter-Strike: Global Offensive (CS GO), Forza Horizon 4, League of Legends (LOL), PlayerUnknown's Battlegrounds (PUBG), Hitman 3, Battlefield V, Shadow of the Tomb Raider.

Gaming benchmark

Fortnite	101.4	96.8
Valorant	115.2	110.0
Cyberpunk 2077	64.5	61.6
Apex Legends	108.3	103.4
Call of Duty Warzone	86.4	82.5
Overwatch	93.3	89.1
Red Dead Redemption 2	79.5	75.9
DOOM Eternal	57.6	55.0
Warzone	89.9	85.8
Assassin's Creed	96.8	92.4
Valheim	95.6	91.3

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 computers participating in the comparisons not only were the equipped with different video cards and different amounts of RAM. But users also tested them at different screen resolutions: 2K, FullHD or 4K. Therefore, 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 compare it in one assembly with the video card that is installed in your computer.

Power consumption

Core i9-11900KB

104%

Core i9-11900KF

45%

To make a final decision on which processor is better, you should also consider the generation of its core. It is clear that the newer the generation, the better the performance of the processor in games and benchmarks, as well as its energy efficiency. In this case the Core i9-11900KB is more energy efficient than the Core i9-11900KF since it has less power consumption: 65W vs. 125W. Power consumption is especially important for laptops. Also, when choosing a processor cooling system, it will be useful to know its TDP. You need to buy a cooler that has the TDP data specified in the specification was greater than the TDP of the compared processor.

Software benchmarks

If you want to use the processor not only for gaming, but also for streaming, programming, machine learning, video editing or video rendering, then first of all you need to pay attention to the performance in multi-threaded mode. In this mode, to achieve maximum performance, the CPU 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. Since there are still many programs that can use only one core to work, and all the advantages of multi-core mode are unused.
Cinebench 23, 20 an 15
The results of this benchmark show Single-threaded and Multi-threaded CPU performance

	Intel Core i9-11900KB	Intel Core i9-11900KF
Cinbench 15 Single-core	296	281
Cinbench 15 Multi-core	2680	2549
Cinbench 20 Single-core	662	630
Cinbench 20 Multi-core	5957	5668
Cinbench 23 Single-core	1720	1636
Cinbench 23 Multi-core	17143	16310

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

	Intel Core i9-11900KB	Intel Core i9-11900KF
Single-Core	3955	3763
Multi-Core	29307	27884

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

	Intel Core i9-11900KB	Intel Core i9-11900KF
Single-Core	2041	1722
Multi-Core	13142	8613

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 in your computer. And the easier it will be to upgrade the system in the future. The same benefits from the presence of overclocking. When the processor can be overclocked, thereby increasing its performance, then it will continue to maintain maximum FPS in new games. The economy are obvious! Accordingly, you do not need to buy a new CPU to enjoy the games any longer.

	Intel Core i9-11900KB	Intel Core i9-11900KF
Announcement date	February 21, 2021	February 21, 2021
Type	Desktop	Desktop
Socket	FCBGA1787	FCLGA1200
Core name	Tiger Lake	Rocket Lake
Architecture	x86	x86
Generation	11	11
Turbo Frequency	5.3 MHz	5.3 MHz
Frequency	3.3 MHz	3.5 MHz
Cores	8	8
Threads	16	16
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	10 nm	14 nm
Transistors count	9800 millions	9800 millions
Power consumption (TDP)	65 W	125 W
Memory type	Up to 3200 MT/s	DDR4-3200
Max. Memory	128 Gb	128 Gb
Memory Frequency	3200	3200
Memory bandwidth	45.8 GB/s	50 GB/s
L1 cache
L2 cache	4 MB	4 MB
L3 cache	24 MB	16 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 i9-11900KF is 5% better than Core i9-11900KB in terms of CPU frequency. 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: 24
The number of parameters for which Intel Core i9-11900KF is better: 3
Although it should be understood that all the data in the table above do not mean that taking them into account you should completely trust a simple comparison of these numbers. Better to watch the testing video and read the opinion of of people who bought Intel Core i9-11900KB and Intel Core i9-11900KF before making a decision 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 i9-11900KF specs and review.