AMD Ryzen 9 5900H vs AMD A4-9120C

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CPU comparison with benchmarks


AMD Ryzen 9 5900H CPU1 vs CPU2 AMD A4-9120C
AMD Ryzen 9 5900H AMD A4-9120C

CPU comparison

AMD Ryzen 9 5900H or AMD A4-9120C - 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 5900H has 8 cores with 16 threads and clocks with a maximum frequency of 4.60 GHz. Up to 64 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 5900H was released in Q2/2021.

The AMD A4-9120C has 2 cores with 2 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 8 GB of memory in 1 memory channels. The AMD A4-9120C was released in Q1/2019.
AMD Ryzen 9 (40) Family AMD A (112)
AMD Ryzen 5000H (11) CPU group AMD A4-9000 (2)
4 Generation 6
Cezanne (Zen 3) Architecture Stoney Ridge (Excavator)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Ryzen 9 5900H is a 8 core processor with a clock frequency of 3.10 GHz (4.60 GHz). The AMD A4-9120C has 2 CPU cores with a clock frequency of 1.60 GHz (2.40 GHz).

AMD Ryzen 9 5900H Characteristic AMD A4-9120C
8 Cores 2
16 Threads 2
normal Core architecture normal
Yes Hyperthreading No
Yes Overclocking ? No
3.10 GHz Frequency 1.60 GHz
4.60 GHz Turbo Frequency (1 Core) 2.40 GHz
-- Turbo Frequency (All Cores) 2.00 GHz

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

AMD Ryzen 9 5900H Characteristic AMD A4-9120C
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

AMD Radeon RX Vega 8 (Renoir) GPU AMD Radeon R4 (Stoney Ridge)
0.40 GHz GPU frequency 0.60 GHz
1.75 GHz GPU (Turbo) --
9 GPU Generation 7
7 nm Technology 28 nm
3 Max. displays 3
8 Compute units 3
512 Shader 192
No Hardware Raytracing No
No Frame Generation No
8 GB Max. GPU Memory 2 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.

AMD Radeon RX Vega 8 (Renoir) GPU AMD Radeon R4 (Stoney Ridge)
Decode / Encode Codec h265 / HEVC (8 bit) Decode
Decode / Encode Codec h265 / HEVC (10 bit) Decode
Decode / Encode Codec h264 Decode
Decode / Encode Codec VP9 Decode
Decode / Encode Codec VP8 Decode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The AMD Ryzen 9 5900H supports a maximum of 64 GB of memory in 2 memory channels. The AMD A4-9120C can connect up to 8 GB of memory in 1 memory channels.

AMD Ryzen 9 5900H Characteristic AMD A4-9120C
LPDDR4-4266, DDR4-3200 Memory DDR4-1866
64 GB Max. Memory 8 GB
2 (Dual Channel) Memory channels 1 (Single Channel)
51.2 GB/s Max. Bandwidth 15.0 GB/s
Yes ECC No
4.00 MB L2 Cache --
16.00 MB L3 Cache 2.00 MB
3.0 PCIe version 3.0
12 PCIe lanes 8
11.8 GB/s PCIe Bandwidth 7.9 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 9 5900H has a TDP of 45 W, that of the AMD A4-9120C is 6 W.

AMD Ryzen 9 5900H Characteristic AMD A4-9120C
45 W TDP (PL1 / PBP) 6 W
-- TDP (PL2) --
54 W TDP up --
-- TDP down --
95 °C Tjunction max. 90 °C

Technical details

The AMD Ryzen 9 5900H has a 20.00 MB cache, while the AMD A4-9120C cache has a total of 2.00 MB.

AMD Ryzen 9 5900H Characteristic AMD A4-9120C
7 nm Technology 28 nm
Chiplet Chip design Unknown
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, AVX, FMA3, FMA4
AM4 (PGA 1331) Socket FP4
AMD-V, SVM Virtualization AMD-V
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems
Q2/2021 Release date Q1/2019
-- Release price --
show more data show more data


Rate these processors

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:
Here you can rate the AMD A4-9120C to help other visitors make their purchasing decisions. The average rating is 1.0 stars (16 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 0 CPU benchmarks
AMD Ryzen 9 5900H (0%)
AMD A4-9120C (0%)
⌀ Multi core performance in 1 CPU benchmarks
AMD Ryzen 9 5900H (100%)
AMD A4-9120C (7%)

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 5900H AMD Ryzen 9 5900H
AMD Radeon RX Vega 8 (Renoir) @ 1.75 GHz
1792 (100%)
AMD A4-9120C AMD A4-9120C
AMD Radeon R4 (Stoney Ridge) @ 0.60 GHz
230 (13%)

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 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
21400 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.00 GHz
1545 (7%)

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 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
1478 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.40 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.
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
12892 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.00 GHz
0 (0%)

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 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
1488 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.40 GHz
0 (0%)

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 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
8449 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.00 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.
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 4.60 GHz
578 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.40 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.
AMD Ryzen 9 5900H AMD Ryzen 9 5900H
8C 16T @ 3.10 GHz
4998 (100%)
AMD A4-9120C AMD A4-9120C
2C 2T @ 2.00 GHz
0 (0%)

Devices using this processor

AMD Ryzen 9 5900H AMD A4-9120C
Unknown Unknown

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