AMD Ryzen 9 5900 vs MediaTek Dimensity 900

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CPU comparison with benchmarks


AMD Ryzen 9 5900 CPU1 vs CPU2 MediaTek Dimensity 900
AMD Ryzen 9 5900 MediaTek Dimensity 900

CPU comparison

AMD Ryzen 9 5900 or MediaTek Dimensity 900 - 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 MediaTek Dimensity 900 has 8 cores with 8 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 16 GB of memory in 4 memory channels. The MediaTek Dimensity 900 was released in Q2/2021.
AMD Ryzen 9 (40) Family Mediatek Dimensity (36)
AMD Ryzen 5000 (14) CPU group MediaTek Dimensity 900 (3)
4 Generation 2
Vermeer (Zen 3) Architecture Cortex-A78 / Cortex-A55
Desktop / Server Segment Mobile
AMD Ryzen 9 3900 Predecessor --
AMD Ryzen 9 7900 Successor --

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 MediaTek Dimensity 900 has 8 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the MediaTek Dimensity 900 is at 2.40 GHz.

AMD Ryzen 9 5900 Characteristic MediaTek Dimensity 900
12 Cores 8
24 Threads 8
normal Core architecture hybrid (big.LITTLE)
Yes Hyperthreading No
Yes Overclocking ? No
3.00 GHz (4.70 GHz) A-Core 2.40 GHz
2x Cortex-A78
-- B-Core 2.00 GHz
6x Cortex-A55

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 5900 Characteristic MediaTek Dimensity 900
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The AMD Ryzen 9 5900 or MediaTek Dimensity 900 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 ARM Mali-G68 MP4
GPU frequency 0.85 GHz
-- GPU (Turbo) --
-- GPU Generation Vallhall 2
Technology 6 nm
Max. displays 1
-- Compute units 4
-- Shader 64
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- 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 ARM Mali-G68 MP4
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 Decode
No Codec AVC Decode / Encode
No Codec VC-1 Decode / Encode
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 MediaTek Dimensity 900 supports up to 16 GB of memory in 4 memory channels and achieves a memory bandwidth of up to 44.0 GB/s.

AMD Ryzen 9 5900 Characteristic MediaTek Dimensity 900
DDR4-3200 Memory LPDDR5-5500, LPDDR4X-4266
128 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 4 (Quad Channel)
51.2 GB/s Max. Bandwidth 44.0 GB/s
Yes ECC No
6.00 MB L2 Cache --
64.00 MB L3 Cache 2.00 MB
4.0 PCIe version --
20 PCIe lanes --
39.4 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD Ryzen 9 5900 is 65 W, while the MediaTek Dimensity 900 has a TDP of 10 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD Ryzen 9 5900 Characteristic MediaTek Dimensity 900
65 W TDP (PL1 / PBP) 10 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
95 °C Tjunction max. --

Technical details

The AMD Ryzen 9 5900 is manufactured in 7 nm and has 70.00 MB cache. The MediaTek Dimensity 900 is manufactured in 6 nm and has a 2.00 MB cache.

AMD Ryzen 9 5900 Characteristic MediaTek Dimensity 900
7 nm Technology 6 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions --
AM4 (PGA 1331) Socket --
AMD-V, SVM Virtualization None
Yes AES-NI No
Windows 10, Windows 11, Linux Operating systems Android
Q2/2021 Release date Q2/2021
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD Ryzen 9 5900 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the MediaTek Dimensity 900 to help other visitors make their purchasing decisions. The average rating is 4.8 stars (6 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD Ryzen 9 5900 (100%)
MediaTek Dimensity 900 (42%)
⌀ Multi core performance in 3 CPU benchmarks
AMD Ryzen 9 5900 (100%)
MediaTek Dimensity 900 (17%)

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 (100%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
707 (42%)

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%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
2135 (15%)

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 (100%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
887 (42%)

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 (100%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
2279 (23%)

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%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
4829 (14%)

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%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 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 5900 AMD Ryzen 9 5900
12C 24T @ 4.10 GHz
20955 (100%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
0 (0%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
AMD Ryzen 9 5900 AMD Ryzen 9 5900
12C 24T @ 3.00 GHz
0 (0%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
440109 (100%)

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%)
MediaTek Dimensity 900 MediaTek Dimensity 900
8C 8T @ 2.40 GHz
0 (0%)

Devices using this processor

AMD Ryzen 9 5900 MediaTek Dimensity 900
Unknown Unknown

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