Intel Core i9-11900F vs Intel Core i9-11900KF


Intel Core i9-11900F on Amazon USA
Intel Core i9-11900KF on Amazon USA

Comparison of the technical characteristics between the processors, with the Intel Core i9-11900F on one side and the Intel Core i9-11900KF on the other side, also their respective performances with the benchmarks. The first is dedicated to the desktop sector, It has 8 cores, 16 threads, a maximum frequency of 5.2GHz. The second is used on the desktop segment, it has a total of 8 cores, 16 threads, its turbo frequency is set to 5.3 GHz. The following table also compares the lithography, the number of transistors (if indicated), the amount of cache memory, the maximum RAM memory capacity, the type of memory accepted, the release date, the maximum number of PCIe lanes, the values ​​obtained in Geekbench and Cinebench.






Specification comparison:


Processor Intel Core i9-11900F Intel Core i9-11900KF
Market (main)Desktop Desktop
ISAx86-64 (64 bit) x86-64 (64 bit)
MicroarchitectureCypress Cove Cypress Cove
Core nameRocket Lake Rocket Lake
FamilyCore i9-11000 Core i9-11000
Part number(s), S-Spec

BX8070811900F,
CM8070804488246,
SRKNK

BX8070811900KF,
CM8070804400164,
SRKNF
Release dateQ1 2021 Q1 2021
Lithography14 nm+++ 14 nm+++
Cores8 8
Threads16 16
Base frequency2.5 GHz 3.5 GHz
Turbo frequency5.2 GHz 5.3 GHz
High performance cores

8 Cores 16 Threads @ 2.5 / 5.1 GHz

8 Cores 16 Threads @ 3.5 / 5.2 GHz
Bus speed8 GT/s 8 GT/s
Cache memory16 MB 16 MB
Max memory capacity128 GB 128 GB
Memory types

DDR4 3200 MT/s

DDR4 3200 MT/s
Max # of memory channels2 2
Max memory bandwidth50 GB/s 50 GB/s
Max PCIe lanes20 20
TDP65 W 125 W
Suggested PSU600W ATX Power Supply 650W ATX Power Supply
GPU integrated graphicsNone None
SocketLGA1200 LGA1200
Compatible motherboardSocket LGA 1200 Motherboard  Socket LGA 1200 Motherboard 
Maximum temperature100°C 100°C
AI accelerator

Gaussian & Neural Accelerator,
Deep Learning Boost

Gaussian & Neural Accelerator,
Deep Learning Boost
Crypto engine

AES New Instructions,
Secure Key

AES New Instructions,
Secure Key
Security

OS Guard,
Execute Disable Bit

OS Guard,
Execute Disable Bit
CPU-Z single thread652 671
CPU-Z multi thread6,376 7,008
Cinebench R15 single thread272 248
Cinebench R15 multi-thread2,448 2,587
Cinebench R20 single thread657 670
Cinebench R20 multi-thread5,929 6,036
Cinebench R23 single thread1,558 1,660
Cinebench R23 multi-thread14,752 16,209
PassMark single thread3,571 3,603
PassMark CPU Mark22,967 24,796
(Windows)
Geekbench 4 single core
7,081 8,479
(Windows)
Geekbench 4 multi-core
37,884 45,061
(Windows)
Geekbench 5 single core
1,696 1,667
(Windows)
Geekbench 5 multi-core
9,213 7,986
(Windows)
Geekbench 6 single core
2,426 2,410
(Windows)
Geekbench 6 multi-core
10,439 10,610
(SGEMM)
GFLOPS Performance
612.2 GFLOPS 908.7 GFLOPS
(Multi-core / watt performance)
Performance / watt ratio
583 pts / W 360 pts / W
Amazon
eBay



We can better compare what are the technical differences between the two processors.

Suggested PSU: We assume that we have an ATX computer case, a high end graphics card, 16GB RAM, a 512GB SSD, a 1TB HDD hard drive, a Blu-Ray drive. We will have to rely on a more powerful power supply if we want to have several graphics cards, several monitors, more memory, etc.

Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.

We see that the two processors have an equivalent number of cores, the turbo frequency of Intel Core i9-11900KF is bigger, that the PDT of Intel Core i9-11900F is lower. Both were produced in the same year.

Performance comparison with the benchmarks:


Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench.


CPU-Z - Multi-Thread & Single Thread Score
Intel Core i9-11900KF 671
7,008
Intel Core i9-11900F 652
6,376


In single core, the difference is 3%. In multi-core, the difference in terms of gap is 10%.


CPU-Z is a system information software that provides the name of the processor, its model number, the codename, the cache levels, the package, the process. It can also gives data about the mainboard, the memory. It makes real time measurement, with finally a benchmark for the single thread, as well as for the multi thread.




Cinebench R15 - Multi-Thread & Single Thread Score
Intel Core i9-11900KF 248
2,587
Intel Core i9-11900F 272
2,448


In single core, the difference is 10%. In multi-core, the difference in terms of gap is 6%.


Cinebench R15 evaluates the performance of CPU calculations by restoring a photorealistic 3D scene. The scene has 2,000 objects, 300,000 polygons, uses sharp and fuzzy reflections, bright areas, shadows, procedural shaders, antialiasing, and so on. The faster the rendering of the scene is created, the more powerful the PC is, with a high number of points.


Cinebench R20 - Multi-Thread & Single Thread Score
Intel Core i9-11900KF 670
6,036
Intel Core i9-11900F 657
5,929


In single core, the difference is 2%. In multi-core, the difference in terms of gap is 2%.


Cinebench R20 is a multi-platform test software which allows to evaluate the hardware capacities of a device such as a computer, a tablet, a server. This version of Cinebench takes into account recent developments in processors with multiple cores and the latest improvements in rendering techniques. The evaluation is ultimately even more relevant.




Cinebench R23 - Multi-Thread & Single Thread Score
Intel Core i9-11900KF 1,660
16,209
Intel Core i9-11900F 1,558
14,752


In single core, the difference is 7%. In multi-core, the difference in terms of gap is 10%.


Cinebench R23 is cross-platform testing software that allows you to assess the hardware capabilities of a device such as a computer, tablet, server. This version of Cinebench takes into account recent developments in processors with multiple cores and the latest improvements in rendering techniques. The evaluation is ultimately even more relevant. The test scene contains no less than 2,000 objects and more than 300,000 polygons in total.


PassMark - CPU Mark & single thread
Intel Core i9-11900KF 3,603
24,796
Intel Core i9-11900F 3,571
22,967


In single core, the difference is 1%. In multi-core, the difference in terms of gap is 8%.


PassMark is a benchmarking software that performs several performance tests including prime numbers, integers, floating point, compression, physics, extended instructions, encoding, sorting. The higher the score is, the higher is the device capacity.




With Windows:

Geekbench 4 - Multi-core & Single Core Score - Windows
Intel Core i9-11900KF 8,479
45,061
Intel Core i9-11900F 7,081
37,884


In single core, the difference is 20%. In multi-core, the difference in terms of gap is 19%.

With Mac OS X:

Geekbench 4 - Multi-core & Single Core Score - Mac OS X
Intel Core i9-11900KF 7,839
42,897
Intel Core i9-11900F 7,233
39,564


In single core, the difference is 8%. In multi-core, the difference in terms of gap is 8%.


Geekbench 4 is a complete benchmark platform with several types of tests, including data compression, images, AES encryption, SQL encoding, HTML, PDF file rendering, matrix computation, Fast Fourier Transform, 3D object simulation, photo editing, memory testing. This allows us to better visualize the respective power of these devices. For each result, we took an average of 250 values on the famous benchmark software.




With Windows:

Geekbench 5 - Multi-core & Single Core Score - Windows
Intel Core i9-11900F 1,696
9,213
Intel Core i9-11900KF 1,667
7,986


In single core, the difference is 2%. In multi-core, the differential gap is 15%.

With Linux:

Geekbench 5 - Multi-core & Single Core Score - Linux
Intel Core i9-11900F 1,777
10,022
Intel Core i9-11900KF 1,863
9,271


In single core, the difference is -5%. In multi-core, the differential gap is 8%.

With macOS:

Geekbench 5 - Multi-core & Single Core Score - macOS
Intel Core i9-11900KF 1,682
9,900
Intel Core i9-11900F 1,613
8,154


In single core, the difference is 4%. In multi-core, the difference in terms of gap is 21%.


Geekbench 5 is a software for measuring the performance of a computer system, for fixed devices, mobile devices, servers. This platform makes it possible to better compare the power of the CPU, the computing power and to compare it with similar or totally different systems. Geekbench 5 includes new workloads that represent work tasks and applications that we can find in reality.




With Windows:

Geekbench 6 - Multi-core & Single Core Score - Windows
Intel Core i9-11900KF 2,410
10,610
Intel Core i9-11900F 2,426
10,439


In single core, the difference is 1%. In multi-core, the difference in terms of gap is 2%.

With Linux:

Geekbench 6 - Multi-core & Single Core Score - Linux
Intel Core i9-11900KF 2,598
11,542
Intel Core i9-11900F 2,123
10,140


In single core, the difference is 22%. In multi-core, the difference in terms of gap is 14%.

With macOS:

Geekbench 6 - Multi-core & Single Core Score - macOS
Intel Core i9-11900F 2,089
10,209
Intel Core i9-11900KF 2,214
10,091


In single core, the difference is -6%. In multi-core, the differential gap is 1%.


Geekbench 6 is a benchmarking platform that is capable of evaluating the performance of a device across multiple operating systems. The software evaluates processor power, with its ability to support different tasks, such as file compression, browsing; GPU computing capabilities, with image editing, video editing, gaming skills, machine learning workloads.


Equivalence:

Intel Core i9-11900F AMD EquivalentIntel Core i9-11900KF AMD Equivalent

See also:

Intel Core i9-11900KIntel Core i9-11900KB




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