In this CPU comparison, we compare the Intel Core i9-11900K and the AMD Ryzen 9 5900X 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 5900X which has 12 CPU cores and was introduced in Q4/2020.
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 5900X clocks with 3.70 GHz (4.80 GHz), has 12 CPU cores and can calculate 24 threads in parallel.
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.
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.
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.
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 5900X supports a maximum of 128 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.
The Intel Core i9-11900K has a TDP of 125 W. The TDP of the AMD Ryzen 9 5900X is 105 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.
The Intel Core i9-11900K has 20.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 9 5900X is at 70.00 MB. The processor is manufactured in 7 nm.
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
the CPU comparison between the Intel Core i9-11900K and the AMD Ryzen 9 5900X shows a slightly higher raw IPC performance on the side of the AMD Ryzen 9 5900X. However, due to the higher single-core clock of the Intel Core i9-11900K, Intel can neutralize this disadvantage and so both desktop processors are about the same in single-core benchmarks.
If applications or benchmarks can use all CPU cores of the processors, Intel's 11th generation Core i9 only sees the rear lights of the AMD Ryzen 9 5900X. This can set itself apart from the Intel Core i9 by between 25 and 30%, which is due to the significantly higher number of cores of 12 (24 threads) compared to only 8 (16 threads) of the i9.
Actually, Intel wanted to manufacture the "Rocket Lake S" processors with a new architecture in 10 nm. Presumably due to delivery or production problems, Intel has decided to implement a backport to the tried and tested, but outdated 14 nm production. This is probably the reason why Intel has given the "Rocket Lake S" processors a maximum of 8 CPU cores.
AMD has more room here and can implement up to 16 CPU cores on the AM4 socket. The successor socket should even come with twice the number of CPU cores. New in the Intel Core i9-11900K is the support of PCIe 4.0, which AMD has supported since the previous generation (Ryzen 3xxx). This allows new M.2 SSDs to be connected to the system very quickly. Transfer rates of 7.5 GB / s are possible via four PCIe 4.0 lines.
Both CPUs support 128 GB of RAM of the DDR4-3200 type in two memory channels and achieve transfer rates of approx. 55-60 GB per second. If you want to use faster memory, you can do so with both processors. Intel uses the so-called XMP overclocking profiles that AMD uses with D.O.C.P. similarly supported. Manual overclocking is of course also possible. Both processors manage up to DDR4-3600 without any problems.