Intel Core i9-11900KF vs AMD Ryzen 9 7940H

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CPU comparison with benchmarks


Intel Core i9-11900KF CPU1 vs CPU2 AMD Ryzen 9 7940H
Intel Core i9-11900KF AMD Ryzen 9 7940H

CPU comparison

In this CPU comparison, we compare the Intel Core i9-11900KF and the AMD Ryzen 9 7940H and use benchmarks to check which processor is faster.

We compare the Intel Core i9-11900KF 8 core processor released in Q1/2021 with the AMD Ryzen 9 7940H which has 8 CPU cores and was introduced in Q1/2023.
Intel Core i9 (78) Family AMD Ryzen 9 (35)
Intel Core i 11000 (22) CPU group AMD Ryzen 7040 (21)
11 Generation 6
Rocket Lake S Architecture Phoenix (Zen 4)
Desktop / Server Segment Mobile
Intel Core i9-10900KF Predecessor --
Intel Core i9-12900KF Successor --

CPU Cores and Base Frequency

The Intel Core i9-11900KF is a 8 core processor with a clock frequency of 3.50 GHz (5.30 GHz). The processor can compute 16 threads at the same time. The AMD Ryzen 9 7940H clocks with 4.00 GHz (5.20 GHz), has 8 CPU cores and can calculate 16 threads in parallel.

Intel Core i9-11900KF Characteristic AMD Ryzen 9 7940H
8 Cores 8
16 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? No
3.50 GHz Frequency 4.00 GHz
5.30 GHz Turbo Frequency (1 Core) 5.20 GHz
4.80 GHz Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i9-11900KF Characteristic AMD Ryzen 9 7940H
-- AI hardware AMD Ryzen AI
-- AI specifications AMD dedicated AI XDNA Technology

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU AMD Radeon 780M
GPU frequency 0.80 GHz
-- GPU (Turbo) 2.80 GHz
-- GPU Generation 3
Technology 4 nm
Max. displays 4
-- Compute units 12
-- Shader 768
No Hardware Raytracing Yes
No Frame Generation AMD FSR
-- Max. GPU Memory 32 GB
-- DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU AMD Radeon 780M
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode
No Codec VP8 Decode
No Codec AV1 Decode / Encode
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i9-11900KF, while the AMD Ryzen 9 7940H supports a maximum of 256 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

Intel Core i9-11900KF Characteristic AMD Ryzen 9 7940H
DDR4-3200 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
128 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 120.0 GB/s
No ECC Yes
4.00 MB L2 Cache 8.00 MB
16.00 MB L3 Cache 16.00 MB
4.0 PCIe version 4.0
20 PCIe lanes 20
39.4 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The Intel Core i9-11900KF has a TDP of 125 W. The TDP of the AMD Ryzen 9 7940H is 54 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i9-11900KF Characteristic AMD Ryzen 9 7940H
125 W TDP (PL1 / PBP) 54 W
251 W @ 56 s TDP (PL2) --
-- TDP up --
95 W TDP down 35 W
100 °C Tjunction max. 100 °C

Technical details

The Intel Core i9-11900KF has 20.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 9 7940H is at 24.00 MB. The processor is manufactured in 4 nm.

Intel Core i9-11900KF Characteristic AMD Ryzen 9 7940H
14 nm Technology 4 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
LGA 1200 Socket FP8
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2021 Release date Q1/2023
513 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-11900KF to help other visitors make their purchasing decisions. The average rating is 4.0 stars (10 ratings). Rate now:
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i9-11900KF (93%)
AMD Ryzen 9 7940H (100%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core i9-11900KF (91%)
AMD Ryzen 9 7940H (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 5.30 GHz
1878 (95%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz
1974 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
11645 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
11600 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 5.30 GHz
2349 (90%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz
2617 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
11167 (90%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
12447 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
25385 (82%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
30995 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 5.30 GHz
1686 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz
0 (0%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
16211 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 5.30 GHz
650 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
6187 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i9-11900KF Intel Core i9-11900KF
@ 0.00 GHz
0 (0%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
AMD Radeon 780M @ 2.80 GHz
4357 (100%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
243 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
0 (0%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 3.50 GHz
6455 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 5.30 GHz
262 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 5.20 GHz
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 4.80 GHz
2515 (100%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
0 (0%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Intel Core i9-11900KF Intel Core i9-11900KF
8C 16T @ 3.50 GHz
0 (0%)
AMD Ryzen 9 7940H AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz
10 (100%)

Devices using this processor

Intel Core i9-11900KF AMD Ryzen 9 7940H
Unknown Unknown

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