Ryzen 9 9900X vs Ryzen 3 PRO 4450U
Aggregate performance score
Ryzen 9 9900X outperforms Ryzen 3 PRO 4450U by a whopping 475% 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 | 1333 | 168 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 68.01 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Renoir (Ryzen 4000 APU) | no data |
| Power efficiency | 38.46 | 27.64 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Renoir PRO (Zen 2) (2020) | Granite Ridge (2024−2025) |
| Release date | 7 May 2020 (5 years ago) | 15 August 2024 (1 year ago) |
| Launch price (MSRP) | no data | $499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Ryzen 3 PRO 4450U and Ryzen 9 9900X 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 | 4 (Quad-Core) | 12 (Dodeca-Core) |
| Threads | 8 | 24 |
| Base clock speed | 2.4 GHz | 4.4 GHz |
| Boost clock speed | 3.7 GHz | 5.6 GHz |
| Multiplier | 25 | no data |
| L1 cache | 64K (per core) | 80 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 4 MB (shared) | 64 MB (shared) |
| Chip lithography | 7 nm | 4 nm |
| Die size | 156 mm2 | 2x 70.6 mm2 |
| Maximum core temperature | 105 °C | 95 °C |
| Number of transistors | 9,800 million | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Ryzen 3 PRO 4450U and Ryzen 9 9900X 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 | FP6 | AM5 |
| Power consumption (TDP) | 15 Watt | 120 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 3 PRO 4450U and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | XFR, FMA3, SSE 4.2, AVX2, SMT | SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 3 PRO 4450U and Ryzen 9 9900X are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 3 PRO 4450U and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-4266 | DDR5 |
| Maximum memory size | 64 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 68.27 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon RX Vega 5 ( - 1400 MHz) | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by Ryzen 3 PRO 4450U and Ryzen 9 9900X.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | no data | 24 |
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 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Geekbench 5.5 Multi-Core
Pros & cons summary
| Performance score | 5.38 | 30.93 |
| Integrated graphics card | 4.24 | 1.82 |
| Recency | 7 May 2020 | 15 August 2024 |
| Physical cores | 4 | 12 |
| Threads | 8 | 24 |
| Chip lithography | 7 nm | 4 nm |
| Power consumption (TDP) | 15 Watt | 120 Watt |
Ryzen 3 PRO 4450U has 133% faster integrated GPU, and 700% lower power consumption.
Ryzen 9 9900X, on the other hand, has a 474.9% higher aggregate performance score, an age advantage of 4 years, 200% more physical cores and 200% more threads, and a 75% more advanced lithography process.
The AMD Ryzen 9 9900X is our recommended choice as it beats the AMD Ryzen 3 PRO 4450U in performance tests.
Be aware that Ryzen 3 PRO 4450U is a notebook processor while Ryzen 9 9900X is a desktop one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
