Ryzen 3 PRO 4450U vs Ryzen 9 9955HX
Aggregate performance score
Ryzen 9 9955HX outperforms Ryzen 3 PRO 4450U by a whopping 485% 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 | 162 | 1333 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | AMD Renoir (Ryzen 4000 APU) |
| Power efficiency | 61.39 | 38.46 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Fire Range-HX (Zen 5) (2025) | Renoir PRO (Zen 2) (2020) |
| Release date | 6 January 2025 (less than a year ago) | 7 May 2020 (5 years ago) |
Detailed specifications
Ryzen 9 9955HX and Ryzen 3 PRO 4450U 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) | 4 (Quad-Core) |
| Threads | 32 | 8 |
| Base clock speed | 2.5 GHz | 2.4 GHz |
| Boost clock speed | 5.4 GHz | 3.7 GHz |
| Multiplier | no data | 25 |
| L1 cache | 80 KB (per core) | 64K (per core) |
| L2 cache | 1 MB (per core) | 512K (per core) |
| L3 cache | 64 MB (shared) | 4 MB (shared) |
| Chip lithography | 4 nm | 7 nm |
| Die size | 2x 70.6 mm2 | 156 mm2 |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 16,630 million | 9,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Ryzen 9 9955HX and Ryzen 3 PRO 4450U 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 | FP6 |
| Power consumption (TDP) | 55 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 9955HX and Ryzen 3 PRO 4450U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | XFR, FMA3, SSE 4.2, AVX2, SMT |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 9955HX and Ryzen 3 PRO 4450U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 9955HX and Ryzen 3 PRO 4450U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4-4266 |
| Maximum memory size | no data | 64 GB |
| Max memory channels | no data | 4 |
| Maximum memory bandwidth | no data | 68.27 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 610M ( - 2200 MHz) | AMD Radeon RX Vega 5 ( - 1400 MHz) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 9955HX and Ryzen 3 PRO 4450U.
| PCIe version | 5.0 | 3.0 |
| PCI Express lanes | 28 | no data |
Synthetic benchmarks
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.
Geekbench 5.5 Multi-Core
Pros & cons summary
| Performance score | 31.49 | 5.38 |
| Integrated graphics card | 2.75 | 4.24 |
| Recency | 6 January 2025 | 7 May 2020 |
| Physical cores | 16 | 4 |
| Threads | 32 | 8 |
| Chip lithography | 4 nm | 7 nm |
| Power consumption (TDP) | 55 Watt | 15 Watt |
Ryzen 9 9955HX has a 485.3% higher aggregate performance score, an age advantage of 4 years, 300% more physical cores and 300% more threads, and a 75% more advanced lithography process.
Ryzen 3 PRO 4450U, on the other hand, has 54.2% faster integrated GPU, and 266.7% lower power consumption.
The AMD Ryzen 9 9955HX is our recommended choice as it beats the AMD Ryzen 3 PRO 4450U in performance tests.
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