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Is the Ryzen 9 5900HX CPU Good for Gaming?

Find out if AMD's Ryzen 9 5900HX mobile processor is good for gaming on a laptop.

5900HX Good for Gaming Onur Binay / Unsplash

Last Updated: August 25, 2022

Written by Kevin Jones

When selecting a CPU for gaming, the most important characteristics are the frequency (clock speed), core/thread count, cache size, and supported memory type. Additional considerations, such as integrated graphics and overclocking needs, may also influence your selection.

Check another CPU:

Is the 5900HX Good for Gaming?

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When using AMD's Ryzen 9 5900HX CPU for gaming, you can expect good game performance when the laptop is good at dissipating heat or mediocre game performance with inadequate heat dissipation. Most laptops will fall somewhere in between in terms of their cooling capabilities. This performance is based on the following characteristics of the CPU and their relevance to the latest graphics-intense games:

  • 16 MB of L3 cache is mediocre for performance
  • 8 cores allow for excellent performance
  • 3.3 GHz base frequency is mediocre for performance (when not boosting)
  • 4.6 GHz single-core max boost frequency is excellent for performance (requires good heat dissipation)
  • Max stock DDR4 speed of 3200 MHz can be good for performance
  • Overclocking support can be excellent for performance (requires good heat dissipation)
  • PCIe 3.0 support can be poor for performance (limits potential of fastest SSDs and GPUs)

The 5900HX has integrated graphics support, with the CPU and GPU on a single chip die, known as an APU. However, this performance assessment assumes you will use an internal or external graphics card. Integrated graphics support is mediocre or worse with the latest graphics-intense games.

The 5900HX also supports LPDDR4, which may have reduced performance compared to DDR4 memory.

Check out these AMD laptop CPUs that are Good or Excellent for gaming:

Is the Cache Size of the 5900HX Good for Gaming?

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A CPU's cache is a small amount of memory, close to the CPU cores, containing recently used data.

Games performance can improve as cache size increases, as it will reduce delays when retrieving commonly used game assets from memory.

An L3 cache capacity of at least 20 MB is ideal for game performance.

The AMD Ryzen 9 5900HX has an L3 cache capacity of 16 MB.

The 5900HX's 16 MB of L3 cache is mediocre for performance with the latest graphics-intense games.

Is the Core Count of the 5900HX Good for Gaming?

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Increased core counts can improve the performance of games that use them, but most modern games don't benefit from having more than 6–8 cores. Remember that cache sizes often increase along with core counts, so if you want to increase your L3 cache, you may need to get a CPU with more cores.

AMD's Ryzen 9 5900HX CPUs have 8 cores.

The 5900HX's 8 cores allow for excellent performance with the latest graphics-intense games.

Is the Clock Speed of the 5900HX Good for Gaming?

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Single-core performance is essential for some games, as many don't take full advantage of multiple cores.

The safest strategy for consistent gaming performance with a laptop is to get a higher base clock speed processor. High base frequencies will ensure that the laptop was designed to adequately cool the CPU at the base frequency. With exceptional cooling, you may be able to maintain speeds near the max boost frequency. However, laptops usually cannot cool CPUs enough to support constant boost frequencies. Boost frequencies are only achieved and sustained under ideal circumstances.

When using good heat dissipation, the 5900HX CPU's support for overclocking can be excellent for performance with the latest graphics-intense games.

The processor has a 3.3 GHz base frequency and supports a 4.6 GHz single-core max boost frequency.

The 5900HX's 3.3 GHz base frequency is mediocre for performance with the latest graphics-intense games, when not boosting. You can reach these base frequencies even without good heat dissipation.

With good heat dissipation, the 5900HX's 4.6 GHz single-core max boost frequency is excellent for performance with the latest graphics-intense games. You can maintain these frequencies with good heat dissipation.

Is the DDR Support of the 5900HX Good for Gaming?

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The 5900HX CPU's support for DDR4 with a max stock speed of 3200 MHz can be good for performance with the latest graphics-intense games.

The 5900HX also supports LPDDR4, which may have reduced performance compared to DDR4 memory.

Faster PC memory can improve game performance and frame rates, but using the fastest RAM may not have as much of an impact as upgrading your CPU and graphics card or adding more RAM.

What Does the HX Suffix in 5900HX Mean?

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Processor Name Suffix Meaning
HX "HX" means it's an extended frequency range high-performance CPU optimized for mobile usage. These CPUs support higher frequencies than standard CPUs. Unlike extended frequency range desktop CPUs, these mobile CPUs use a lower base frequency to generate less heat and use less power when less processing is needed. HX CPUs have better performance than U, H, and HS CPUs but use more power.