Intel Core i9-11900K vs AMD Ryzen 9 5900HX

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CPU comparison with benchmarks


Intel Core i9-11900K CPU1 vs CPU2 AMD Ryzen 9 5900HX
Intel Core i9-11900K AMD Ryzen 9 5900HX

CPU comparison

In this CPU comparison, we compare the Intel Core i9-11900K and the AMD Ryzen 9 5900HX and use benchmarks to check which processor is faster.

We compare the Intel Core i9-11900K 8 core processor released in Q1/2021 with the AMD Ryzen 9 5900HX which has 8 CPU cores and was introduced in Q2/2021.
Intel Core i9 (78) Family AMD Ryzen 9 (34)
Intel Core i 11000 (22) CPU group AMD Ryzen 5000H (11)
11 Generation 4
Rocket Lake S Architecture Cezanne (Zen 3)
Desktop / Server Segment Mobile
Intel Core i9-10900K Predecessor --
Intel Core i9-12900K Successor AMD Ryzen 9 6900HX

CPU Cores and Base Frequency

The Intel Core i9-11900K 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 5900HX clocks with 3.30 GHz (4.60 GHz), has 8 CPU cores and can calculate 16 threads in parallel.

Intel Core i9-11900K Characteristic AMD Ryzen 9 5900HX
8 Cores 8
16 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? No
3.50 GHz Frequency 3.30 GHz
5.30 GHz Turbo Frequency (1 Core) 4.60 GHz
4.80 GHz Turbo Frequency (All Cores) 4.20 GHz

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 i9-11900K Characteristic AMD Ryzen 9 5900HX
-- AI hardware --
-- AI specifications --

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.

Intel UHD Graphics 750 GPU AMD Radeon RX Vega 8 (Renoir)
0.35 GHz GPU frequency 0.40 GHz
1.30 GHz GPU (Turbo) 1.90 GHz
12 GPU Generation 9
14 nm Technology 7 nm
3 Max. displays 3
32 Compute units 8
256 Shader 512
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 8 GB
12 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.

Intel UHD Graphics 750 GPU AMD Radeon RX Vega 8 (Renoir)
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode / Encode
Decode Codec VP8 Decode / Encode
Decode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode 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 i9-11900K, while the AMD Ryzen 9 5900HX supports a maximum of 64 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

Intel Core i9-11900K Characteristic AMD Ryzen 9 5900HX
DDR4-3200 Memory LPDDR4-4266, DDR4-3200
128 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
No ECC No
4.00 MB L2 Cache 4.00 MB
16.00 MB L3 Cache 16.00 MB
4.0 PCIe version 3.0
20 PCIe lanes 12
39.4 GB/s PCIe Bandwidth 11.8 GB/s

Thermal Management

The Intel Core i9-11900K has a TDP of 125 W. The TDP of the AMD Ryzen 9 5900HX is 45 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i9-11900K Characteristic AMD Ryzen 9 5900HX
125 W TDP (PL1 / PBP) 45 W
251 W @ 56 s TDP (PL2) --
-- TDP up 54 W
95 W TDP down 35 W
100 °C Tjunction max. 105 °C

Technical details

The Intel Core i9-11900K has 20.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 9 5900HX is at 20.00 MB. The processor is manufactured in 7 nm.

Intel Core i9-11900K Characteristic AMD Ryzen 9 5900HX
14 nm Technology 7 nm
Monolithic Chip design Chiplet
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, AVX2, FMA3
LGA 1200 Socket FP6
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 Q2/2021
539 $ Release price --
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Rate these processors

Here you can rate the Intel Core i9-11900K to help other visitors make their purchasing decisions. The average rating is 4.0 stars (3 ratings). Rate now:
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Average performance in benchmarks

⌀ Single core performance in 5 CPU benchmarks
⌀ Multi core performance in 7 CPU benchmarks

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1686 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
1478 (88%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
16211 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
13955 (86%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1878 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
1510 (80%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
11645 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
8432 (72%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
2491 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
1992 (80%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
12679 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
7255 (57%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
650 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
578 (89%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
6187 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
5474 (88%)

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 i9-11900K Intel Core i9-11900K
Intel UHD Graphics 750 @ 1.30 GHz
666 (34%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
AMD Radeon RX Vega 8 (Renoir) @ 1.90 GHz
1946 (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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
243 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
183 (75%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
25385 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
22815 (90%)

CPU-Z Benchmark 17 (Single-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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
676 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
596 (88%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 3.50 GHz
6539 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 3.30 GHz
5692 (87%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
0 (0%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
86 (100%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
0 (0%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 GHz
578 (100%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
0 (0%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
174 (100%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
262 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.60 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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
2515 (100%)
AMD Ryzen 9 5900HX AMD Ryzen 9 5900HX
8C 16T @ 4.20 GHz
0 (0%)

Devices using this processor

Intel Core i9-11900K AMD Ryzen 9 5900HX
Unknown Unknown

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