Ryzen 9 7840HX vs Ryzen 9 9955HX
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 115 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | AMD Dragon Range (Zen 4, Ryzen 7045) |
| Power efficiency | 62.79 | no data |
| Designer | AMD | AMD |
| Architecture codename | Fire Range-HX (Zen 5) (2025) | Dragon Range-HX (Zen 4) (2023−2024) |
| Release date | 6 January 2025 (less than a year ago) | 17 January 2024 (1 year ago) |
Detailed specifications
Ryzen 9 9955HX and Ryzen 9 7840HX 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 | 16 (Hexadeca-Core) | 12 (Dodeca-Core) |
| Threads | 32 | 24 |
| Base clock speed | no data | 2.9 GHz |
| Boost clock speed | 5.4 GHz | 5.1 GHz |
| L1 cache | 1.3 MB | 768 KB |
| L2 cache | 16 MB | 12 MB |
| L3 cache | 64 MB | 64 MB |
| Chip lithography | no data | 5 nm |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | no data | 9900 Million |
| 64 bit support | + | + |
Compatibility
Information on Ryzen 9 9955HX and Ryzen 9 7840HX 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 | no data | FL1 |
| Power consumption (TDP) | 55 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 9955HX and Ryzen 9 7840HX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 9955HX and Ryzen 9 7840HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 610M ( - 2200 MHz) | AMD Radeon 610M (400 - 2200 MHz) |
Pros & cons summary
| Recency | 6 January 2025 | 17 January 2024 |
| Physical cores | 16 | 12 |
| Threads | 32 | 24 |
Ryzen 9 9955HX has an age advantage of 11 months, and 33.3% more physical cores and 33.3% more threads.
We couldn't decide between AMD Ryzen 9 9955HX and AMD Ryzen 9 7840HX. We've got no test results to judge.
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