Ryzen 9 9900X3D vs Ryzen 9 7945HX3D
Primary details
Comparing Ryzen 9 7945HX3D and Ryzen 9 9900X3D processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 105 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | no data |
| Power efficiency | 61.36 | no data |
| Architecture codename | Dragon Range-HX (Zen 4) (2023−2024) | Granite Ridge (2024−2025) |
| Release date | 27 July 2023 (1 year ago) | 6 January 2025 (recently) |
Detailed specifications
Ryzen 9 7945HX3D and Ryzen 9 9900X3D 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) | 16 (Hexadeca-Core) |
| Threads | 32 | 32 |
| Base clock speed | 2.3 GHz | 4.4 GHz |
| Boost clock speed | 5.4 GHz | 5.5 GHz |
| L1 cache | 64 KB (per core) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 128 MB (shared) | 128 MB (shared) |
| Chip lithography | 5 nm | 4 nm |
| Die size | 2x 71 mm2 | 2x 70.6 mm2 |
| Maximum core temperature | 89 °C | no data |
| Number of transistors | 17,840 million | 16,630 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Ryzen 9 7945HX3D and Ryzen 9 9900X3D 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.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FL1 | AM5 |
| Power consumption (TDP) | 55 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7945HX3D and Ryzen 9 9900X3D. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7945HX3D and Ryzen 9 9900X3D are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7945HX3D and Ryzen 9 9900X3D. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-5200 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon 610M (400 - 2200 MHz) | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7945HX3D and Ryzen 9 9900X3D.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 28 | 24 |
Pros & cons summary
| Integrated graphics card | 2.89 | 1.99 |
| Recency | 27 July 2023 | 6 January 2025 |
| Chip lithography | 5 nm | 4 nm |
| Power consumption (TDP) | 55 Watt | 120 Watt |
Ryzen 9 7945HX3D has 45.2% faster integrated GPU, and 118.2% lower power consumption.
Ryzen 9 9900X3D, on the other hand, has an age advantage of 1 year, and a 25% more advanced lithography process.
We couldn't decide between Ryzen 9 7945HX3D and Ryzen 9 9900X3D. We've got no test results to judge.
Be aware that Ryzen 9 7945HX3D is a notebook processor while Ryzen 9 9900X3D is a desktop one.
Should you still have questions on choice between Ryzen 9 7945HX3D and Ryzen 9 9900X3D, ask them in Comments section, and we shall answer.
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