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AMD Ryzen 9 9955HX Review | 78 Data compared

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  • Avg. price in UK: ~£740
  • Avg. price in US: ~$440
  • PassMark benchmark result: 55701
  • N. of physical cores: 16
  • CPU boost clock speed: 5.4 GHz

AMD Ryzen 9 9955HX review. Compare 78 technical specifications and user reviews to see how it ranks among processors and if it is worth buying.

8.6

Overall score

What it is: An overall evaluation of the processor's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best processors on the market.

Score components:

90.0%

8.6

Technical Score

10.0%

?

User score

Excellent
8.6

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

8.7

Performance

18.0%

9.3

Cache & Architecture

10.0%

8.5

Memory & PCIe

7.0%

6.2

Power & Thermal

4.0%

8.6

Platform

1.0%

7.4

Integrated Graphics

Excellent
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 8.9
    Gaming

    Score components:

    30.0%

    8.6

    PassMark single-core benchmark score

    25.0%

    9.5

    Geekbench 6 single-core benchmark score

    20.0%

    8.8

    CPU boost clock speed

    17.0%

    10

    L3 cache

    8.0%

    6.7

    N. of physical cores

  • 8.7
    Video editing

    Score components:

    45.0%

    8.6

    Geekbench 6 multi-core benchmark score

    20.0%

    6.7

    N. of physical cores

    20.0%

    10

    CPU threads

    15.0%

    10

    L3 cache

  • No image
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Best prices in UK

    N/A~ £740

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The AMD Ryzen 9 9955HX is a high-end mobile processor from the 'Fire Range' series, built on the Zen 5 architecture and a 4nm TSMC process. It features 16 cores and 32 threads with a base clock of 2.5 GHz and a max boost clock of 5.4 GHz, supported by 64 MB of L3 cache and a default TDP of 55W (configurable up to 75W). Its primary advantages include exceptional multi-threaded performance for heavy workloads like rendering and music production, PCIe 5.0 support, and high energy efficiency for its performance class. However, potential drawbacks include high power draw under full load that requires substantial cooling solutions, a lack of the specialized 3D V-Cache found in its 'HX3D' sibling for peak gaming gains, and relatively high idle power consumption compared to more portable, monolithic laptop chips.

Technical Specifications of processor AMD Ryzen 9 9955HX

Technical Score

What it is: An assessment of the processor's technical performance, covering key areas such as processing performance, core configuration, efficiency, platform support, integrated features, and thermal behavior.

When it matters: When you want to compare processors based on technical performance and available features.

Score components:

60.0%

?

Performance

18.0%

?

Cache & Architecture

10.0%

?

Memory & PCIe

7.0%

?

Power & Thermal

4.0%

?

Platform

1.0%

?

Integrated Graphics

8.6
AMD Ryzen 9 9955HX has a technical score of 8.62 points, which is higher than that of 98.8% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the processor.

When it matters: When you want to know how a processor performs in real workloads and how reliable it is for gaming, productivity, and efficiency according to user feedback.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the processor.
When it matters: When you prefer to choose a processor reviewed and selected by many other buyers.
1.0
AMD Ryzen 9 9955HX has a popularity of 1 points, which is higher than 0% of products in this category.
Ratio quality/price

What it is: An indicator that combines the processor's overall rating with its cost.

When it matters: When you are looking for a processor with a good balance between performance, efficiency, and price.

Score components:

60.0%

8.6

Overall score

40.0%

6.6

Price

8.0
AMD Ryzen 9 9955HX has a quality-to-price ratio of 8 points, which is higher than 94.2% of products in this category.
Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

AMD
Processor type
What it is: The kind of system the processor is built for, such as desktop PCs, laptops, workstations, or servers.
When it matters: When you want a processor meant for the kind of machine you are actually building or buying, rather than a chip aimed at a different class of system.

Importance: HIGH

mobile
AMD Ryzen 9 9955HX belongs to the mobile processor class, which is more advanced than that of 7.3% of processors and equal to that of 48.6% of processors.
CPU socket
What it is: The physical socket the processor fits into on the motherboard.
When it matters: When you need to make sure the CPU can actually be installed on a specific motherboard.

Importance: HIGH

FL1
AMD Ryzen 9 9955HX uses the FL1 CPU socket, which is older than that of 60.9% of processors and equal to that of 1.1% of processors.
Chipset
What it is: The motherboard chipset families officially meant to work with the processor.
When it matters: When you are checking whether a CPU will work with the motherboard features and platform you plan to use.

Importance: HIGH

N/A
CPU architecture
What it is: The processor family or design generation behind the chip, such as Zen 4 or Raptor Lake.
When it matters: When you are comparing CPUs across generations and want a clearer sense of their design age, feature level, and expected performance class.

Importance: HIGH

x86-64
AMD Ryzen 9 9955HX uses the x86-64 architecture, which is more advanced than that of 1.7% of processors and equal to that of 98.3% of processors.
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N. of physical cores
What it is: The number of physical CPU cores on the processor.
When it matters: When you run workloads that benefit from more real cores.

Importance: HIGH

Good value: 8+

16
AMD Ryzen 9 9955HX has 16 CPU cores, which is more than 91.5% of processors and equal to 4% of processors.
CPU threads
What it is: The total number of processing threads the CPU can handle at once.
When it matters: When you run heavily threaded workloads or multitask a lot.

Importance: HIGH

Good value: 16+

32
AMD Ryzen 9 9955HX offers 32 CPU threads, which is more than 95% of processors and equal to 3% of processors.
Threads per core
What it is: The number of threads each physical core can handle at once.
When it matters: When you want to understand how much thread-level parallelism each core can provide in multitasking or heavily threaded work.

Importance: MEDIUM

Good value: 2

2
AMD Ryzen 9 9955HX offers 2 threads per core, which is more than 30.4% of processors and equal to 69.6% of processors.
CPU boost clock speed
What it is: The highest clock speed the processor can reach under boost conditions.
When it matters: When you care about peak speed in short bursts.

Importance: HIGH

Good value: >4.7 GHz

5.4 GHz
AMD Ryzen 9 9955HX reaches a boost clock of 5.4 GHz which is higher than that of 94.9% of processors and equal to that of 2.6% of processors.
CPU base clock speed
What it is: The processor's normal all-core starting frequency before boost behavior raises clocks temporarily.
When it matters: When you care about steadier performance in longer workloads rather than short burst speed alone.

Importance: MEDIUM

16 x 2.5 GHz
AMD Ryzen 9 9955HX has a base clock of 16x2.5 GHz which is equal to that of 100% of processors.
Show more
Semiconductor size
What it is: The manufacturing process node used to produce the processor, usually expressed in nanometers.
When it matters: When efficiency, heat, and the relative modernity of the chip-making process matter to your comparison.

Importance: HIGH

Good value: <10 nm

4 nm
AMD Ryzen 9 9955HX uses a 4 nm process node, which is more advanced than that of 88.4% of processors and equal to that of 7.5% of processors.
Foundry
What it is: The semiconductor manufacturer that physically fabricates the processor chip.
When it matters: When process source, manufacturing generation, or foundry differences matter to your comparison more than day-to-day performance alone.

Importance: MEDIUM

TSMC 4 nm
AMD Ryzen 9 9955HX is built on the TSMC 4 nm foundry process, which is more advanced than that of 87% of processors and equal to that of 7.5% of processors.
L3 cache
What it is: The total amount of L3 cache available on the processor.
When it matters: When you want better performance in cache-sensitive workloads and games.

Importance: MEDIUM

Good value: >=16 MB

64 MB
AMD Ryzen 9 9955HX has an L3 cache of 64 MB which is larger than that of 94.6% of processors and equal to that of 2.8% of processors.
L2 cache
What it is: The total amount of L2 cache available across the processor.
When it matters: When you want to compare CPU design efficiency and how much fast intermediate cache the cores have available.

Importance: MEDIUM

Good value: >=6 MB

16 MB
AMD Ryzen 9 9955HX has an L2 cache of 16 MB which is larger than that of 89.8% of processors and equal to that of 2.7% of processors.
L1 cache
What it is: The total amount of L1 cache built into the processor, which sits closest to the cores.
When it matters: When you are comparing low-level CPU design details rather than the broader performance picture buyers usually notice first.

Importance: MEDIUM

Good value: >=512 KB

1,280 KB
AMD Ryzen 9 9955HX has an L1 cache of 1280 KB which is larger than that of 92.2% of processors and equal to that of 0.6% of processors.
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DDR memory version
What it is: The RAM generation the processor is designed to support, such as DDR4 or DDR5.
When it matters: When you need the CPU to match the kind of memory platform you want to buy or reuse.

Importance: MEDIUM

Good value: DDR5

DDR5
AMD Ryzen 9 9955HX supports DDR DDR5, which is newer than that of 66.4% of processors and equal to that of 12.6% of processors.
Maximum memory speed
What it is: The highest official memory speed supported by the processor.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=4800 MHz

5,600 MHz
AMD Ryzen 9 9955HX supports memory speeds up to 5600 MHz, which is higher than that of 79.8% of processors and equal to 4% of processors.
Max memory speed (JEDEC)
What it is: The highest official RAM speed the processor supports under standard JEDEC settings, before any memory overclocking profiles are applied.
When it matters: When officially supported stock RAM speed matters more than XMP, EXPO, or manual memory tuning.

Importance: MEDIUM

Good value: >=5600 MHz

DDR5-5600 MHz
AMD Ryzen 9 9955HX supports JEDEC memory speeds up to DDR5-5600 MHz, which is higher than that of 80.3% of processors and equal to 5.1% of processors.
Max memory speed (XMP / EXPO)
What it is: The highest memory speed supported through XMP or EXPO profiles.
When it matters: When you want faster RAM through memory profiles.

Importance: MEDIUM

Good value: >=5200 MHz

N/A
Maximum memory capacity
What it is: The largest total amount of memory officially supported by the processor.
When it matters: When you plan a system with very large RAM capacity.

Importance: HIGH

Good value: >=128 GB

96 GB
AMD Ryzen 9 9955HX supports up to 96 GB of memory, which is more than 56% of processors and equal to 5.8% of processors.
Show more
Integrated graphics
What it is: Includes built-in graphics, so the system can output video without a separate graphics card.
When it matters: When you want the PC to work without a dedicated GPU, or you are building an office, media, compact, or troubleshooting-friendly system.

Importance: HIGH

yes
AMD Ryzen 9 9955HX includes integrated graphics. 87.6% of processors include integrated graphics.
Integrated GPU model
What it is: The model name of the integrated graphics processor, if present.
When it matters: When you plan to use the CPU's built-in graphics.

Importance: MEDIUM

Radeon 610M
AMD Ryzen 9 9955HX uses the Radeon 610M integrated GPU, which is more advanced than that in 89.3% of processors and equal to that in 1.9% of processors.
Integrated GPU execution units
What it is: The number of execution units available in the integrated graphics part of the processor.
When it matters: When you plan to rely on built-in graphics and want a better sense of its light gaming, display, or media capability.

Importance: MEDIUM

Good value: >=24

2
AMD Ryzen 9 9955HX has 2 GPU execution units, which is fewer than 95.6% of processors and equal to 4.4% of processors.
Integrated GPU base frequency
What it is: The base operating frequency of the integrated GPU.
When it matters: When integrated graphics performance matters to you.

Importance: MEDIUM

Good value: >=350 MHz

400 MHz
AMD Ryzen 9 9955HX has an integrated GPU clock of 400 MHz which is higher than that of 73.3% of processors and equal to that of 8% of processors.
Integrated media encoders/decoders
What it is: The hardware media formats the processor can encode or decode directly.
When it matters: When you stream, edit video, or rely on hardware media acceleration.

Importance: LOW

AV1 (HW decode)
AMD Ryzen 9 9955HX supports AV1 (HW decode) media codecs, which is narrower support than 63.1% of processors and equal to 10.8% of processors.
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TDP (Thermal design power)
What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
When it matters: When you choose a cooler or build in a tighter case.

Importance: HIGH

Good value: <30 W

55 W
AMD Ryzen 9 9955HX has a TDP of 55 W which is higher than that of 63.9% of processors and equal to that of 4.2% of processors.
Base power (PL1)
What it is: The sustained power target used for longer CPU loads.
When it matters: When you choose cooling and power delivery for sustained workloads.

Importance: MEDIUM

Good value: <30 W

55 W
AMD Ryzen 9 9955HX has a base power of 55 W which is higher than that of 64.1% of processors and equal to that of 4.1% of processors.
Boost power (PL2)
What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
When it matters: When you size cooling and power delivery for peak turbo behavior.

Importance: MEDIUM

Good value: <50 W

101 W
AMD Ryzen 9 9955HX has a boost power of 101 W which is higher than that of 70% of processors and equal to that of 0.3% of processors.
Tau (power duration limit)
What it is: The time limit the CPU can stay at higher boost power before dropping toward sustained power.
When it matters: When you want to understand turbo behavior under longer loads.

Importance: MEDIUM

Good value: <=28 s

?
Configurable TDP
What it is: Allows the processor to run in alternate power modes instead of being fixed to one default TDP target.
When it matters: When you want more control over heat, noise, and power draw in compact systems, quieter builds, or thermally limited machines.

Importance: LOW

yes
AMD Ryzen 9 9955HX supports configurable TDP. 52.9% of processors support configurable TDP.
cTDP: 55-75 W
Show more

AMD Ryzen 9 9955HX vs the average processor

  • 5.4x better multi-core performance
    AMD Ryzen 9 9955HX has a higher multi-core performance than the average processor (15,015 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
    What it is: A Cinebench R20 score that reflects how well the processor handles long, heavy rendering workloads across many cores.
    When it matters: When you care about sustained multi-core performance in rendering, compiling, heavy creation work, or productivity workloads that use many threads.

    Importance: HIGH

    Good value: >4700

    AMD Ryzen 9 9955HX has a higher multi-core performance than the average processor (15,015 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.15,015 vs 2,783
  • 5.29x higher PassMark score
    AMD Ryzen 9 9955HX has a higher PassMark benchmark score than the average processor (55,701 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
    What it is: A benchmark score that gives a broad idea of overall processor performance.
    When it matters: When you want a quick overall performance comparison.

    Importance: HIGH

    Good value: >19000

    AMD Ryzen 9 9955HX has a higher PassMark benchmark score than the average processor (55,701 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.55,701 vs 10,532.5
  • 4.08x higher multi-core score
    AMD Ryzen 9 9955HX has a higher Geekbench 6 multi-core score than the average processor (19,563 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
    What it is: A Geekbench 6 score that reflects multi-core CPU performance in mixed modern workloads.
    When it matters: When you want a quick picture of multi-core speed in everyday mixed workloads, multitasking, and broadly optimized software.

    Importance: HIGH

    Good value: >8500

    AMD Ryzen 9 9955HX has a higher Geekbench 6 multi-core score than the average processor (19,563 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.19,563 vs 4,793
  • 2.19x higher single-core score
    AMD Ryzen 9 9955HX has a higher Geekbench 6 single-core score than the average processor (3,219 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
    What it is: A Geekbench 6 score that reflects single-core CPU performance in mixed modern workloads.
    When it matters: When you care about snappy everyday performance in lighter apps, browsing, office work, or tasks that do not scale well across many cores.

    Importance: HIGH

    Good value: >2000

    AMD Ryzen 9 9955HX has a higher Geekbench 6 single-core score than the average processor (3,219 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.3,219 vs 1,471
  • 76.5% better single-core performance
    AMD Ryzen 9 9955HX has a higher PassMark single-core score than the average processor (4,382 vs 2,483). The average processor scores 2,483 in PassMark single-core.
    What it is: A benchmark score that reflects single-core CPU performance.
    When it matters: When you care about responsiveness in lighter or older software.

    Importance: HIGH

    Good value: >3200

    AMD Ryzen 9 9955HX has a higher PassMark single-core score than the average processor (4,382 vs 2,483). The average processor scores 2,483 in PassMark single-core.4,382 vs 2,483
  • 24 more CPU threads
    AMD Ryzen 9 9955HX has more CPU threads than the average processor (32 vs 8). The average processor has 8 CPU threads.
    What it is: The total number of processing threads the CPU can handle at once.
    When it matters: When you run heavily threaded workloads or multitask a lot.

    Importance: HIGH

    Good value: 16+

    AMD Ryzen 9 9955HX has more CPU threads than the average processor (32 vs 8). The average processor has 8 CPU threads.32 vs 8
  • 10 more CPU cores
    AMD Ryzen 9 9955HX has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.
    What it is: The number of physical CPU cores on the processor.
    When it matters: When you run workloads that benefit from more real cores.

    Importance: HIGH

    Good value: 8+

    AMD Ryzen 9 9955HX has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.16 vs 6
  • 8x larger L3 cache
    AMD Ryzen 9 9955HX has a higher L3 cache than the average processor (64 MB vs 8 MB). The average processor has L3 cache of 8 MB.
    What it is: The total amount of L3 cache available on the processor.
    When it matters: When you want better performance in cache-sensitive workloads and games.

    Importance: MEDIUM

    Good value: >=16 MB

    AMD Ryzen 9 9955HX has a higher L3 cache than the average processor (64 MB vs 8 MB). The average processor has L3 cache of 8 MB.64 MB vs 8 MB
  • 5 year/s newer release date
    AMD Ryzen 9 9955HX has a newer release date than the average processor (2,025 vs 2,020).
  • 5.29x higher PassMark score
    AMD Ryzen 9 9955HX has a higher PassMark benchmark score than the average processor (55,701 vs 10,532.5). The average processor scores 10,532.5 in PassMark benchmark.
  • 5.4x better multi-core performance
    AMD Ryzen 9 9955HX has a higher multi-core performance than the average processor (15,015 vs 2,783). The average processor scores 2,783 in Cinebench R20 multi-core.
  • 4.08x higher multi-core score
    AMD Ryzen 9 9955HX has a higher Geekbench 6 multi-core score than the average processor (19,563 vs 4,793). The average processor scores 4,793 in Geekbench 6 multi-core.
  • 2.19x higher single-core score
    AMD Ryzen 9 9955HX has a higher Geekbench 6 single-core score than the average processor (3,219 vs 1,471). The average processor scores 1,471 in Geekbench 6 single-core.
  • 76.5% better single-core performance
    AMD Ryzen 9 9955HX has a higher PassMark single-core score than the average processor (4,382 vs 2,483). The average processor scores 2,483 in PassMark single-core.
  • 24 more CPU threads
    AMD Ryzen 9 9955HX has more CPU threads than the average processor (32 vs 8). The average processor has 8 CPU threads.
  • 10 more CPU cores
    AMD Ryzen 9 9955HX has more CPU cores than the average processor (16 vs 6). The average processor has 6 CPU cores.
  • 25.6% higher boost clock
    AMD Ryzen 9 9955HX has a higher boost clock speed than the average processor (5.4 GHz vs 4.3 GHz). The average processor reaches boost clock speed of 4.3 GHz.
  • 70.7% higher Cinebench R20 single-core score
    AMD Ryzen 9 9955HX has a higher Cinebench R20 single-core score than the average processor (826 vs 484). The average processor scores 484 in Cinebench R20 single-core.
  • Unlocked for overclocking
    AMD Ryzen 9 9955HX has an unlocked multiplier, the average processor does not.
  • 4 wider front-end design
    AMD Ryzen 9 9955HX has a higher front-end width than the average processor (8 vs 4). The average processor uses front-end width of 4.
  • 8x larger L3 cache
    AMD Ryzen 9 9955HX has a higher L3 cache than the average processor (64 MB vs 8 MB). The average processor has L3 cache of 8 MB.
  • More advanced microarchitecture
    AMD Ryzen 9 9955HX uses a more advanced microarchitecture than the average processor (Fire Range vs Kaby Lake).
  • 6.4x larger L2 cache
    AMD Ryzen 9 9955HX has a higher L2 cache than the average processor (16 MB vs 2.5 MB). The average processor has L2 cache of 2.5 MB.
  • 66.7% smaller process node
    AMD Ryzen 9 9955HX has a lower process node than the average processor (4 nm vs 12 nm). The average processor uses a process node of 12 nm.
  • 2.33x more L3 per core
    AMD Ryzen 9 9955HX has more L3 cache per core than the average processor (4 MB/core vs 1.714 MB/core). The average processor provides 1.714 MB/core of L3 cache per core.
  • 3.33x larger L1 cache
    AMD Ryzen 9 9955HX has a higher L1 cache than the average processor (1,280 KB vs 384 KB). The average processor has L1 cache of 384 KB.
  • More advanced foundry
    AMD Ryzen 9 9955HX uses a more advanced foundry process than the average processor (TSMC 4 nm vs Intel 14 nm).
  • 2x more L2 per core
    AMD Ryzen 9 9955HX has more L2 cache per core than the average processor (1 MB/core vs 0.5 MB/core). The average processor provides 0.5 MB/core of L2 cache per core.
  • 3.36x more transistors
    AMD Ryzen 9 9955HX has more transistors than the average processor (16.6 billion vs 4.95 billion). The average processor has 4.95 billion transistors.
  • 12 more PCIe lanes
    AMD Ryzen 9 9955HX has more PCIe lanes than the average processor (28 vs 16). The average processor offers 16 PCIe lanes.
  • Newer PCIe version
    AMD Ryzen 9 9955HX supports a newer PCIe version than the average processor (5 vs 3.0).
  • 95.6% higher memory bandwidth
    AMD Ryzen 9 9955HX has a higher memory bandwidth than the average processor (89.6 GB/s vs 45.8 GB/s). The average processor offers memory bandwidth of 45.8 GB/s.
  • Supports memory overclocking
    AMD Ryzen 9 9955HX supports memory overclocking, the average processor does not.
  • 90.9% higher memory speed
    AMD Ryzen 9 9955HX has a higher maximum memory speed than the average processor (5,600 MHz vs 2,933 MHz). The average processor supports memory speed of 2,933 MHz.
  • Newer DDR support
    AMD Ryzen 9 9955HX supports a newer DDR generation than the average processor (DDR5 vs DDR4).
  • Supports ECC memory
    AMD Ryzen 9 9955HX supports ECC memory, the average processor does not.
  • 50% more memory capacity
    AMD Ryzen 9 9955HX has more maximum memory capacity than the average processor (96 GB vs 64 GB). The average processor supports 64 GB of memory.
  • Better integrated GPU
    AMD Ryzen 9 9955HX uses a better integrated GPU than the average processor (Radeon 610M vs Intel UHD Graphics 630).
  • 1 more supported displays
    AMD Ryzen 9 9955HX has more supported displays than the average processor (4 vs 3). The average processor supports 3 displays.

Total
Overall
Platform
Performance
Cache & Architecture
Memory & PCIe
Integrated Graphics
  • Older TPM support
    AMD Ryzen 9 9955HX supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).
  • Narrower media codec support
    AMD Ryzen 9 9955HX supports fewer media codecs than the average processor (AV1 (HW decode) vs H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode)).
  • 91.7% fewer GPU execution units
    AMD Ryzen 9 9955HX has fewer GPU execution units than the average processor (2 vs 24). The average processor has 24 GPU execution units.
  • 57.8% higher boost power
    AMD Ryzen 9 9955HX has a higher boost power draw than the average processor (101 W vs 64 W). The average processor has a boost power draw of 64 W.
  • 22.2% higher base power
    AMD Ryzen 9 9955HX has a higher base power draw than the average processor (55 W vs 45 W). The average processor has a base power draw of 45 W.
  • 22.2% higher TDP
    AMD Ryzen 9 9955HX has a higher TDP than the average processor (55 W vs 45 W). The average processor has a TDP of 45 W.
  • 57.8% higher boost power
    AMD Ryzen 9 9955HX has a higher boost power draw than the average processor (101 W vs 64 W). The average processor has a boost power draw of 64 W.
    What it is: The short-term boost power limit the processor may draw under heavier turbo loads.
    When it matters: When you size cooling and power delivery for peak turbo behavior.

    Importance: MEDIUM

    Good value: <50 W

    AMD Ryzen 9 9955HX has a higher boost power draw than the average processor (101 W vs 64 W). The average processor has a boost power draw of 64 W.101 W vs 64 W
  • Narrower media codec support
    AMD Ryzen 9 9955HX supports fewer media codecs than the average processor (AV1 (HW decode) vs H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode)).
    What it is: The hardware media formats the processor can encode or decode directly.
    When it matters: When you stream, edit video, or rely on hardware media acceleration.

    Importance: LOW

    AMD Ryzen 9 9955HX supports fewer media codecs than the average processor (AV1 (HW decode) vs H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode)).AV1 (HW decode) vs H.264 (HW decode/encode), H.265 (HW decode/encode), VP9 (HW decode/encode), AV1 (HW decode)
  • 2.96x more expensive
    AMD Ryzen 9 9955HX is more expensive than the average processor (£740 vs £250).
    AMD Ryzen 9 9955HX is more expensive than the average processor (£740 vs £250).£740 vs £250
  • 91.7% fewer GPU execution units
    AMD Ryzen 9 9955HX has fewer GPU execution units than the average processor (2 vs 24). The average processor has 24 GPU execution units.
    What it is: The number of execution units available in the integrated graphics part of the processor.
    When it matters: When you plan to rely on built-in graphics and want a better sense of its light gaming, display, or media capability.

    Importance: MEDIUM

    Good value: >=24

    AMD Ryzen 9 9955HX has fewer GPU execution units than the average processor (2 vs 24). The average processor has 24 GPU execution units.2 vs 24
  • 22.2% higher base power
    AMD Ryzen 9 9955HX has a higher base power draw than the average processor (55 W vs 45 W). The average processor has a base power draw of 45 W.
    What it is: The sustained power target used for longer CPU loads.
    When it matters: When you choose cooling and power delivery for sustained workloads.

    Importance: MEDIUM

    Good value: <30 W

    AMD Ryzen 9 9955HX has a higher base power draw than the average processor (55 W vs 45 W). The average processor has a base power draw of 45 W.55 W vs 45 W
  • Older TPM support
    AMD Ryzen 9 9955HX supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).
    What it is: The kind of TPM security support associated with the processor or its platform.
    When it matters: When operating-system requirements, device encryption, enterprise security, or platform trust features matter.

    Importance: LOW

    AMD Ryzen 9 9955HX supports an older TPM version than the average processor (fTPM 2.0 vs PTT 2.0).fTPM 2.0 vs PTT 2.0
  • 22.2% higher TDP
    AMD Ryzen 9 9955HX has a higher TDP than the average processor (55 W vs 45 W). The average processor has a TDP of 45 W.
    What it is: The rated thermal design power, which gives a general idea of cooling and power needs.
    When it matters: When you choose a cooler or build in a tighter case.

    Importance: HIGH

    Good value: <30 W

    AMD Ryzen 9 9955HX has a higher TDP than the average processor (55 W vs 45 W). The average processor has a TDP of 45 W.55 W vs 45 W
Total
Overall
Platform
Integrated Graphics
Power & Thermal

Graphic comparison of AMD Ryzen 9 9955HX and other processors

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Third-party reviews

What customers like about AMD Ryzen 9 9955HX?

  • Exceptional multi-threaded performance, often beating desktop-class CPUs in rendering and heavy computational tasks
  • Top-tier single-core performance, making it a powerful choice for high-end gaming and single-threaded apps
  • Efficient modern architecture (Zen 5 on 4nm) that delivers more power per watt than previous generations
  • Features 16 full performance cores, which is highly beneficial for software that cannot utilize 'efficiency' cores
  • Support for cutting-edge standards like PCIe 5.0 and high-speed DDR5-5600 RAM
  • Unlocked multiplier allows for easy overclocking and performance tuning

What customers dislike about AMD Ryzen 9 9955HX?

  • Poor battery life, with high idle power draw that prevents the CPU from entering deep sleep states
  • Significant heat generation under load, often requiring aggressive fan curves and noisy cooling systems
  • High cost, with laptops featuring this processor typically starting at premium price points ($2500+)
  • Performance drops significantly when running on battery compared to being plugged in
  • Lacks the massive L3 cache of the '3D' variant, which some users feel makes the standard HX a lesser value for pure gaming

Expert reviews

C
cpubenchmark.net
28/03/2026
AMD Ryzen 9 9955HX - CPU Benchmarks Would you like a comparison table of these benchmark results against its 3D V-Cache sibling, the 9955HX3D?

The AMD Ryzen 9 9955HX is a high-end 16-core, 32-thread mobile processor based on the Zen 5 architecture, specifically designed for high-performance laptops and workstations. It boasts exceptional multi-threaded capabilities with a PassMark CPU Mark score of roughly 55,800, utilizing 4nm process technology to balance performance within a 55W–75W TDP range. Key features include PCIe...Read more

T
techradar.com
17/08/2025
Chuwi GameBook 9955HX creator laptop review

The Chuwi GameBook 9955HX, powered by an AMD Ryzen 9 9955HX and NVIDIA RTX 5070 Ti, delivers flagship-level performance for gaming and content creation at a competitive price point. It features a bright 16-inch 2.5K 300Hz display, extensive upgradeability, and versatile power modes, though it utilizes a plastic chassis. While offering excellent value, the machine compromises on...Read more

C
computerbase.de
28/03/2025
AMD vs. Intel in the XMG Neo 16: Benchmarks and Final Verdict

The ComputerBase review of the AMD Ryzen 9 9955HX and Intel Core Ultra 9 275HX highlights elite, closely matched performance for high-end laptops, with the 16-core AMD chip leveraging Zen 5 to deliver superior multi-core productivity and high efficiency. Conversely, the 24-core Intel Arrow Lake processor thrives in single-core scenarios and gaming, supported by faster DDR5-6400...Read more

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notebookcheck.com
21/07/2025
Minisforum MS-A2 with Ryzen 9 9955HX: Review highlights strengths and weaknesses of the mini workstation

The Minisforum MS-A2 is a compact workstation featuring a high-performance AMD Ryzen 9 9955HX, excelling in multi-core tasks, offering significant storage expansion (up to 12TB–23TB via triple M.2), and including 10G SFP+ networking. Key cons include an extremely weak integrated Radeon 610M GPU, noticeable thermal throttling, and high fan noise (up to 58dB) under load. Despite these...Read more

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C
computerbase.de
28/03/2025
AMD Ryzen 9 9955HX and Intel Core Ultra 9 275HX Benchmarked

According to the ComputerBase review, the AMD Ryzen 9 9955HX (16 Zen 5 cores) and Intel Core Ultra 9 275HX represent top-tier mobile performance, with AMD holding a slight edge in raw multi-threaded speed and gaming. While Intel's Arrow Lake architecture significantly improves battery life (up to 30-40% better) and idle power management, AMD maintains an advantage in peak,...Read more

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N
notebookcheck.biz
21/01/2026
XMG Apex 16 Max Review: Ryzen 9 9955HX, RTX 5070 Ti, and Mini-LED for this gaming laptop

The XMG Apex 16 Max (M25) is a high-performance gaming laptop featuring an AMD Ryzen 9 9955HX and NVIDIA GeForce RTX 5070 Ti (140W), delivering exceptional gaming performance that often rivals or exceeds Intel-based competitors. A key highlight is the optional 16-inch Mini-LED display, boasting 1,000 nits peak brightness, 100% DCI-P3 color coverage, and a 300 Hz refresh rate for...Read more

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C
cpubenchmark.net
01/03/2026
AMD Ryzen 9 9955HX - CPU Performance Benchmarks

The AMD Ryzen 9 9955HX is a high-end, 16-core (32-thread) mobile processor built on the Zen 5 architecture, boasting a 5.4 GHz boost clock and roughly 55,800 points in PassMark's multi-threaded testing. It excels in demanding applications like 3D rendering, offering high efficiency within a 55W-75W configurable TDP, while supporting DDR5-5600 memory and PCIe 5.0. Key drawbacks...Read more

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L
laptopmedia.com
25/03/2026
AMD Ryzen 9 9955HX | LaptopMedia Italy

The AMD Ryzen 9 9955HX, featured by LaptopMedia, is a high-end mobile processor based on the 4nm Zen 5 "Fire Range" architecture, featuring 16 cores and 32 threads for enthusiast-grade laptops. It delivers exceptional multi-core performance for demanding tasks such as 3D rendering and video editing, while offering modern connectivity through PCIe 5.0 lanes. Key advantages include...Read more

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