AMD Ryzen 9 5900 vs Intel Core i9-11900

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CPU comparison with benchmarks


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

CPU comparison

AMD Ryzen 9 5900 or Intel Core i9-11900 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD Ryzen 9 5900 has 12 cores with 24 threads and clocks with a maximum frequency of 4.70 GHz. Up to 128 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 5900 was released in Q2/2021.

The Intel Core i9-11900 has 8 cores with 16 threads and clocks with a maximum frequency of 5.20 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Core i9-11900 was released in Q1/2021.
AMD Ryzen 9 (34) Family Intel Core i9 (78)
AMD Ryzen 5000 (12) CPU group Intel Core i 11000 (22)
4 Generation 11
Vermeer (Zen 3) Architecture Rocket Lake S
Desktop / Server Segment Desktop / Server
AMD Ryzen 9 3900 Predecessor Intel Core i9-10900
AMD Ryzen 9 7900 Successor Intel Core i9-12900

CPU Cores and Base Frequency

The AMD Ryzen 9 5900 has 12 CPU cores and can calculate 24 threads in parallel. The clock frequency of the AMD Ryzen 9 5900 is 3.00 GHz (4.70 GHz) while the Intel Core i9-11900 has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the Intel Core i9-11900 is at 2.50 GHz (5.20 GHz).

AMD Ryzen 9 5900 Characteristic Intel Core i9-11900
12 Cores 8
24 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? No
3.00 GHz Frequency 2.50 GHz
4.70 GHz Turbo Frequency (1 Core) 5.20 GHz
4.10 GHz Turbo Frequency (All Cores) 3.80 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.

AMD Ryzen 9 5900 Characteristic Intel Core i9-11900
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD Ryzen 9 5900 or Intel Core i9-11900 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU Intel UHD Graphics 750
GPU frequency 0.35 GHz
-- GPU (Turbo) 1.30 GHz
-- GPU Generation 12
Technology 14 nm
Max. displays 3
-- Compute units 32
-- Shader 256
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 64 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 Intel UHD Graphics 750
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 / Encode
No Codec VP8 Decode
No Codec AV1 Decode
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The AMD Ryzen 9 5900 can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 51.2 GB/s. The Intel Core i9-11900 supports up to 128 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 51.2 GB/s.

AMD Ryzen 9 5900 Characteristic Intel Core i9-11900
DDR4-3200 Memory DDR4-3200
128 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC No
6.00 MB L2 Cache 4.00 MB
64.00 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 thermal design power (TDP for short) of the AMD Ryzen 9 5900 is 65 W, while the Intel Core i9-11900 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD Ryzen 9 5900 Characteristic Intel Core i9-11900
65 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) 224 W @ 56 s
-- TDP up --
-- TDP down --
95 °C Tjunction max. 100 °C

Technical details

The AMD Ryzen 9 5900 is manufactured in 7 nm and has 70.00 MB cache. The Intel Core i9-11900 is manufactured in 14 nm and has a 20.00 MB cache.

AMD Ryzen 9 5900 Characteristic Intel Core i9-11900
7 nm Technology 14 nm
Chiplet Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4.1, SSE4.2, AVX2, AVX-512
AM4 (PGA 1331) Socket LGA 1200
AMD-V, SVM Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q2/2021 Release date Q1/2021
-- Release price 439 $
show more data show more data


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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.70 GHz
1622 (100%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 5.20 GHz
1630 (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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.70 GHz
1688 (92%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 5.20 GHz
1831 (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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.10 GHz
13874 (100%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 3.80 GHz
9674 (70%)

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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.70 GHz
2130 (99%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 5.20 GHz
2148 (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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.10 GHz
9740 (97%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 3.80 GHz
10040 (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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.10 GHz
34570 (100%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 3.80 GHz
22830 (66%)

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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 3.00 GHz
7746 (100%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 2.50 GHz
6293 (81%)

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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 4.10 GHz
20955 (100%)
Intel Core i9-11900 Intel Core i9-11900
8C 16T @ 3.80 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.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
@ 0.00 GHz
0 (0%)
Intel Core i9-11900 Intel Core i9-11900
Intel UHD Graphics 750 @ 1.30 GHz
666 (100%)

Devices using this processor

AMD Ryzen 9 5900 Intel Core i9-11900
Unknown Unknown

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