Ryzen 9 9900X vs i9-11900KF

#ad 
Buy on Amazon
VS

Aggregate performance score

Core i9-11900KF
2021
8 cores / 16 threads, 125 Watt
15.69
Ryzen 9 9900X
2024
12 cores / 24 threads, 120 Watt
34.52
+120%

Ryzen 9 9900X outperforms Core i9-11900KF by a whopping 120% based on our aggregate benchmark results.

Primary details

Comparing Core i9-11900KF and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking437109
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data66.82
Market segmentDesktop processorDesktop processor
Power efficiency11.8827.22
Architecture codenameRocket Lake (2021)Granite Ridge (2024)
Release date16 March 2021 (3 years ago)15 August 2024 (less than a year ago)
Launch price (MSRP)no data$499

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-11900KF and Ryzen 9 9900X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores8 (Octa-Core)12 (Dodeca-Core)
Threads1624
Base clock speed3.5 GHz4.4 GHz
Boost clock speed5.2 GHz5.6 GHz
Bus rate8 GT/sno data
L1 cache64K (per core)80 KB (per core)
L2 cache256K (per core)1 MB (per core)
L3 cache16 MB (shared)64 MB (shared)
Chip lithography14 nm4 nm
Die sizeno data2x 70.6 mm2
Maximum core temperature100 °C95 °C
Maximum case temperature (TCase)72 °Cno data
Number of transistorsno data16,630 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier++

Compatibility

Information on Core i9-11900KF and Ryzen 9 9900X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketFCLGA1200AM5
Power consumption (TDP)125 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900KF and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A
AES-NI++
AVX++
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX+-
Idle States+no data
Thermal Monitoring+-
Turbo Boost Max 3.0+no data
Precision Boost 2no data+
Deep Learning Boost+-

Security technologies

Core i9-11900KF and Ryzen 9 9900X technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data
Secure Key+no data
Identity Protection+-
SGX-no data
OS Guard+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900KF and Ryzen 9 9900X are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900KF and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-3200DDR5
Maximum memory size128 GBno data
Max memory channels2no data
Maximum memory bandwidth50 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Core i9-11900KF and Ryzen 9 9900X.

PCIe version4.05.0
PCI Express lanes2024

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-11900KF 15.69
Ryzen 9 9900X 34.52
+120%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i9-11900KF 24928
Ryzen 9 9900X 54839
+120%

Gaming performance

Pros & cons summary


Performance score 15.69 34.52
Recency 16 March 2021 15 August 2024
Physical cores 8 12
Threads 16 24
Chip lithography 14 nm 4 nm
Power consumption (TDP) 125 Watt 120 Watt

Ryzen 9 9900X has a 120% higher aggregate performance score, an age advantage of 3 years, 50% more physical cores and 50% more threads, a 250% more advanced lithography process, and 4.2% lower power consumption.

The Ryzen 9 9900X is our recommended choice as it beats the Core i9-11900KF in performance tests.


Should you still have questions on choice between Core i9-11900KF and Ryzen 9 9900X, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i9-11900KF
Core i9-11900KF
AMD Ryzen 9 9900X
Ryzen 9 9900X

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.1 613 votes

Rate Core i9-11900KF on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.8 189 votes

Rate Ryzen 9 9900X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i9-11900KF or Ryzen 9 9900X, agree or disagree with our judgements, or report an error or mismatch.