Ryzen 9 9955HX3D vs A9-9420e
Aggregate performance score
Ryzen 9 9955HX3D outperforms A9-9420e by a whopping 5725% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2853 | 77 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Bristol Ridge | AMD Dragon Range (Zen 4, Ryzen 7045) |
| Power efficiency | 4.41 | 70.08 |
| Designer | AMD | AMD |
| Architecture codename | Stoney Ridge (2016−2019) | Fire Range-HX (Zen 5) (2025) |
| Release date | 1 June 2018 (6 years ago) | 6 January 2025 (less than a year ago) |
Detailed specifications
A9-9420e and Ryzen 9 9955HX3D basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 2 (Dual-core) | 16 (Hexadeca-Core) |
| Threads | 2 | 32 |
| Boost clock speed | no data | 5.4 GHz |
| L1 cache | no data | 1.3 MB |
| L2 cache | 1 MB | 16 MB |
| L3 cache | no data | 128 MB |
| Chip lithography | 28 nm | no data |
| Die size | 124.5 mm2 | no data |
| Maximum core temperature | 90 °C | no data |
| Number of transistors | 1200 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on A9-9420e and Ryzen 9 9955HX3D compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Socket | BGA | no data |
| Power consumption (TDP) | 15 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A9-9420e and Ryzen 9 9955HX3D. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Virtualization, | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by A9-9420e and Ryzen 9 9955HX3D are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A9-9420e and Ryzen 9 9955HX3D. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon R5 (Stoney Ridge) | AMD Radeon 610M ( - 2200 MHz) |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 0.69 | 40.19 |
| Integrated graphics card | 1.36 | 2.70 |
| Recency | 1 June 2018 | 6 January 2025 |
| Physical cores | 2 | 16 |
| Threads | 2 | 32 |
| Power consumption (TDP) | 15 Watt | 55 Watt |
A9-9420e has 266.7% lower power consumption.
Ryzen 9 9955HX3D, on the other hand, has a 5724.6% higher aggregate performance score, 98.5% faster integrated GPU, an age advantage of 6 years, and 700% more physical cores and 1500% more threads.
The AMD Ryzen 9 9955HX3D is our recommended choice as it beats the AMD A9-9420e in performance tests.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
