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AMD Ryzen 9 6900HX vs 5900HX: How Do They Different?

Ryzen processors are built on AMD’s Zen architecture, designed to deliver exceptional multi-core performance and improved power efficiency.

With each new generation, AMD introduces enhancements that result in significant performance gains, making them formidable contenders in the CPU market.

The focus of this comparative analysis revolves around two distinguished offerings from AMD’s Ryzen line of processors: the AMD Ryzen 9 6900HX and the AMD Ryzen 9 5900HX.

FeatureRyzen 9 6900HXRyzen 9 5900HX
Process node6nm7nm
MicroarchitectureZen 3+Zen 3
PCIe versionPCIe 4.0PCIe 3.0
Memory supportDDR5-6400DDR4-3200
PerformanceSlightly fasterSlower
Power efficiencyMore power efficientLess power efficient
PriceMore expensiveLess expensive

Key Differences

The main differences between the two chips are as follows:

1. Process node: 

The Ryzen 9 6900HX is manufactured on the 6nm TSMC process, while the Ryzen 9 5900HX is manufactured on the 7nm TSMC process. This means that the Ryzen 9 6900HX is slightly more efficient and can offer slightly higher clock speeds.

2. Microarchitecture: 

The Ryzen 9 6900HX uses the Zen 3+ microarchitecture, while the Ryzen 9 5900HX uses the Zen 3 microarchitecture. The Zen 3+ microarchitecture offers a few minor performance improvements over Zen 3.

3. PCIe version: 

The Ryzen 9 6900HX supports PCIe 4.0, while the Ryzen 9 5900HX only supports PCIe 3.0. This means that the Ryzen 9 6900HX can offer better performance with PCIe 4.0 devices, such as high-speed SSDs.

4. Memory support: 

The Ryzen 9 6900HX supports DDR5-6400 memory, while the Ryzen 9 5900HX only supports DDR4-3200 memory. This means that the Ryzen 9 6900HX can offer better memory bandwidth for demanding applications.

Performance Comparison

The true measure of a processor’s worth lies in its performance, now, we will meticulously compare the gaming and productivity capabilities of the AMD Ryzen 9 6900HX and Ryzen 9 5900HX processors.

1. Gaming Performance

In terms of gaming performance, the Ryzen 9 6900HX is slightly faster than the Ryzen 9 5900HX. In most games, the Ryzen 9 6900HX scores about 5-10% higher frames per second (FPS) than the Ryzen 9 5900HX.

The Ryzen 9 6900HX can also handle more demanding games at higher settings and resolutions. For example, it can run Cyberpunk 2077 at 1440p with high settings and still maintain a smooth 60 FPS.

The following table shows the FPS benchmarks for the two chips in some popular gaming titles:

GameRyzen 9 6900HXRyzen 9 5900HX
Cyberpunk 207770 FPS @ 1080p63 FPS @ 1080p
Red Dead Redemption 260 FPS @ 1440p55 FPS @ 1440p
Fortnite240 FPS @ 1080p225 FPS @ 1080p
CS:GO300 FPS @ 1080p285 FPS @ 1080p

2. Productivity Performance

In terms of productivity performance, the Ryzen 9 6900HX is also slightly faster than the Ryzen 9 5900HX. In most productivity benchmarks, the Ryzen 9 6900HX scores about 5-10% higher than the Ryzen 9 5900HX.

The Ryzen 9 6900HX is also better at handling multitasking. It can run more applications at the same time without slowing down.

The following table shows the results of some productivity benchmarks for the two chips:

BenchmarkRyzen 9 6900HXRyzen 9 5900HX
Cinebench R23 multi-core24,257 points22,070 points
Geekbench 5 multi-core10,629 points9,776 points
Handbrake 4K to 1080p1 minute, 48 seconds1 minute, 55 seconds

3. GPU Performance

The AMD Ryzen 9 6900HX and Ryzen 9 5900HX both have integrated graphics capabilities. The 6900HX has the AMD Radeon 680M integrated graphics, while the 5900HX has the AMD Radeon RX Vega 8 integrated graphics.

The Radeon 680M is based on the RDNA 2 architecture, while the Radeon RX Vega 8 is based on the Vega architecture. The RDNA 2 architecture is newer and more efficient, so the Radeon 680M should offer better performance than the Radeon RX Vega 8.

In terms of benchmarks, the Radeon 680M has been shown to be about 20% faster than the Radeon RX Vega 8 in some games. This means that the 6900HX should be able to handle light gaming and other GPU-intensive tasks better than the 5900HX.

Here is a table comparing the integrated graphics capabilities of the AMD Ryzen 9 6900HX and Ryzen 9 5900HX:

FeatureAMD Ryzen 9 6900HXAMD Ryzen 9 5900HX
Integrated graphicsAMD Radeon 680MAMD Radeon RX Vega 8
ArchitectureRDNA 2Vega
Base clock speed2.4 GHz1.9 GHz
Boost clock speed2.4 GHz2.1 GHz
Number of CUs128
Memory bandwidth64 GB/s44 GB/s

4. Power Efficiency and Thermals

The AMD Ryzen 9 6900HX and 5900HX are both high-end mobile processors, but there are some key differences in their power efficiency and thermals.

The 6900HX is built on a newer 6nm process, which is more efficient than the 7nm process used in the 5900HX. This means that the 6900HX can run at higher clock speeds without generating as much heat.

In terms of power consumption, the 6900HX has a TDP of 45W, while the 5900HX has a TDP of 35-54W. This means that the 6900HX can theoretically consume up to 10W more power than the 5900HX.

In terms of thermals, the 6900HX is also slightly better than the 5900HX. The 6900HX has a maximum temperature of 105°C, while the 5900HX has a maximum temperature of 100°C. This means that the 6900HX is less likely to throttle under sustained load.

Here is a table comparing the power efficiency and thermals of the AMD Ryzen 9 6900HX and Ryzen 9 5900HX:

FeatureAMD Ryzen 9 6900HXAMD Ryzen 9 5900HX
Power efficiencyBetterWorse

Pros and Cons: Ryzen 9 6900HX vs. Ryzen 9 5900HX

Ryzen 9 6900HX: Strengths:

  • Exceptional Performance: The Ryzen 9 6900HX boasts higher clock speeds and more cores, providing outstanding multi-core and single-core performance for demanding tasks and applications.
  • Overclocking Potential: With unlocked multipliers, enthusiasts can push the processor beyond its base clock for even better performance gains.
  • Power Efficiency: Despite its high performance, the Ryzen 9 6900HX manages power efficiently, contributing to longer battery life in compatible laptops.
  • Advanced Technologies: Equipped with AMD’s latest technologies, such as Precision Boost and Smart Access Memory, which further enhance performance.

Ryzen 9 6900HX Weaknesses:

  • Limited Availability: As a flagship mobile processor, the Ryzen 9 6900HX may be available only in select high-end mobile devices, limiting consumer choices.
  • Price: The top-tier performance of the Ryzen 9 6900HX comes at a premium, making it relatively expensive compared to other mobile processors.

Ryzen 9 5900HX: Strengths:

  • Excellent Performance: The Ryzen 9 5900HX delivers impressive performance for both gaming and productivity tasks, making it suitable for a wide range of users.
  • Availability: As a previous-generation processor, the Ryzen 9 5900HX may be more widely available and accessible in various mini PCs.
  • Competitive Price: With the introduction of newer processors, the Ryzen 9 5900HX may have a more attractive price-to-performance ratio.

Ryzen 9 5900HX: Weaknesses:

  • Fewer Cores: The Ryzen 9 5900HX has fewer cores compared to its newer counterpart, which may impact heavy multi-threaded workloads.
  • Older Technologies: Some of the advanced features found in the Ryzen 9 6900HX may not be present in the Ryzen 9 5900HX, affecting overall performance and efficiency.

Target Use Cases for Each Processor

The AMD Ryzen 9 6900HX and 5900HX are both high-end mobile processors, but they have different target use cases.

Ryzen 9 6900HX:

Enthusiast Gamers: The Ryzen 9 6900HX excels in gaming performance and is ideal for gamers who demand the highest frame rates and smooth gameplay in AAA titles.

Content Creators: Video editing, 3D rendering, and other resource-intensive content creation tasks benefit from the Ryzen 9 6900HX’s multi-core capabilities.

Power Users: Users engaged in heavy multitasking, running virtual machines, or utilizing software with high CPU requirements will appreciate the Ryzen 9 6900HX’s power.

Ryzen 9 5900HX:

Gamers and Streamers: The Ryzen 9 5900HX offers excellent gaming performance and is well-suited for gamers who also live stream their gameplay.

Creative Professionals: Designers, photographers, and creators will find the Ryzen 9 5900HX capable of handling resource-demanding creative applications.

General Productivity: Everyday users who need a powerful and responsive mini PC for office tasks, web browsing, and multimedia consumption can rely on the Ryzen 9 5900HX.

Choosing the Right Processor for Your Needs

When it comes to selecting the right processor for your mini PC, it’s essential to consider your specific needs and use cases. The AMD Ryzen 9 6900HX and Ryzen 9 5900HX are powerful mobile processors that cater to different types of users.


High Refresh Rate Displays: If you have a high-refresh-rate display (e.g., 120Hz or 144Hz), the Ryzen 9 6900HX’s superior performance will fully utilize the screen’s potential, providing smoother gameplay experiences.

Ray Tracing: For gamers interested in ray tracing technology and higher graphical fidelity in supported games, both processors can handle ray tracing, but the Ryzen 9 6900HX may offer better performance in this scenario.

Content Creation:

Multi-Core Performance: Content creators benefit from the Ryzen 9 6900HX’s additional cores when rendering videos, 3D modeling, or working with complex simulations. However, the Ryzen 9 5900HX still performs admirably in creative applications.

GPU Integration: Both processors come with integrated graphics, which can be useful for light content creation tasks when a dedicated GPU is not available.


Multitasking: If you frequently work with multiple applications open simultaneously, the Ryzen 9 6900HX’s higher core count can handle multitasking more efficiently, leading to smoother productivity workflows.

Single-Core Performance: For single-core tasks like web browsing and office applications, both processors provide excellent performance, with the Ryzen 9 5900HX being more cost-effective for these scenarios.


Overall, the AMD Ryzen 9 6900HX is a slightly better processor than the AMD Ryzen 9 5900HX. It is newer, more efficient, and offers slightly higher clock speeds.

However, the 6900HX is also more expensive. If you are looking for the absolute best performance, then the 6900HX is the way to go. However, if you are on a budget, the 5900HX is still a great choice.

GEEKOM has embraced these high-performance mobile processors in new mini PCs designs, resulting in portable devices that can handle demanding workloads and provide an excellent user experience.

Ready to experience the power of a mini PC equipped with the cutting-edge AMD Ryzen processor? Look no further! Head over to GEEKOM’s website now to learn more about these mini PCs and to place an order.




Jonathan is a Technical Support Engineer at GEEKOM. With years of experience under his belt, he is an expert at troubleshooting hardware and software issues, assisting customers with their inquiries, and providing clear and concise instructions to even the most technically challenged users.

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