AMD Ryzen 9 3900X vs AMD Ryzen 9 5900H

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CPU comparison with benchmarks


AMD Ryzen 9 3900X CPU1 vs CPU2 AMD Ryzen 9 5900H
AMD Ryzen 9 3900X AMD Ryzen 9 5900H

CPU comparison

In this CPU comparison, we compare the AMD Ryzen 9 3900X and the AMD Ryzen 9 5900H and use benchmarks to check which processor is faster.

We compare the AMD Ryzen 9 3900X 12 core processor released in Q3/2019 with the AMD Ryzen 9 5900H which has 8 CPU cores and was introduced in Q2/2021.
AMD Ryzen 9 (34) Family AMD Ryzen 9 (34)
AMD Ryzen 3000 (15) CPU group AMD Ryzen 5000H (11)
3 Generation 4
Matisse (Zen 2) Architecture Cezanne (Zen 3)
Desktop / Server Segment Mobile
-- Predecessor --
AMD Ryzen 9 5900X Successor --

CPU Cores and Base Frequency

The AMD Ryzen 9 3900X is a 12 core processor with a clock frequency of 3.80 GHz (4.60 GHz). The processor can compute 24 threads at the same time. The AMD Ryzen 9 5900H clocks with 3.10 GHz (4.60 GHz), has 8 CPU cores and can calculate 16 threads in parallel.

AMD Ryzen 9 3900X Characteristic AMD Ryzen 9 5900H
12 Cores 8
24 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.80 GHz Frequency 3.10 GHz
4.60 GHz Turbo Frequency (1 Core) 4.60 GHz
4.00 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.

AMD Ryzen 9 3900X Characteristic AMD Ryzen 9 5900H
-- 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.

no iGPU GPU AMD Radeon RX Vega 8 (Renoir)
GPU frequency 0.40 GHz
-- GPU (Turbo) 1.75 GHz
-- GPU Generation 9
Technology 7 nm
Max. displays 3
-- Compute units 8
-- Shader 512
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 8 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 RX Vega 8 (Renoir)
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 / Encode
No Codec AV1 No
No Codec AVC Decode / Encode
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 AMD Ryzen 9 3900X, while the AMD Ryzen 9 5900H supports a maximum of 64 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

AMD Ryzen 9 3900X Characteristic AMD Ryzen 9 5900H
DDR4-3200 Memory 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
Yes ECC Yes
6.00 MB L2 Cache 4.00 MB
64.00 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 AMD Ryzen 9 3900X has a TDP of 105 W. The TDP of the AMD Ryzen 9 5900H is 45 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen 9 3900X Characteristic AMD Ryzen 9 5900H
105 W TDP (PL1 / PBP) 45 W
142 W TDP (PL2) --
-- TDP up 54 W
-- TDP down --
95 °C Tjunction max. 95 °C

Technical details

The AMD Ryzen 9 3900X has 70.00 MB cache and is manufactured in 7 nm. The cache of AMD Ryzen 9 5900H is at 20.00 MB. The processor is manufactured in 7 nm.

AMD Ryzen 9 3900X Characteristic AMD Ryzen 9 5900H
7 nm Technology 7 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
AM4 (PGA 1331) Socket AM4 (PGA 1331)
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q3/2019 Release date Q2/2021
485 $ Release price --
show more data show more data


Rate these processors

Here you can rate the AMD Ryzen 9 3900X to help other visitors make their purchasing decisions. The average rating is 4.0 stars (8 ratings). Rate now:
Here you can rate the AMD Ryzen 9 5900H to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 4 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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1302 (88%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
1478 (100%)

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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
18165 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
12892 (71%)

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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1300 (87%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
1488 (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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
12454 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
8449 (68%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
502 (87%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
578 (100%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
6954 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
4998 (72%)

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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
32755 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
21400 (65%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
78 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
0 (0%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1068 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
0 (0%)

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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1714 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
0 (0%)

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 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
10689 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 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 3900X AMD Ryzen 9 3900X
@ 0.00 GHz
0 (0%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
AMD Radeon RX Vega 8 (Renoir) @ 1.75 GHz
1792 (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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
281 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
0 (0%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
115.9 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
0 (0%)

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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
536 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz
8183 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
214 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
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.
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
3168 (100%)
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
0 (0%)

Devices using this processor

AMD Ryzen 9 3900X AMD Ryzen 9 5900H
Unknown Unknown

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