Ryzen 9 9950X vs Mobile Sempron SI-42
Aggregate performance score
Ryzen 9 9950X outperforms Mobile Sempron SI-42 by a whopping 19686% based on our aggregate benchmark results.
Primary details
Comparing Mobile Sempron SI-42 and Ryzen 9 9950X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3240 | 62 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 65.94 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Mobile Sempron | no data |
| Power efficiency | 0.80 | 23.29 |
| Architecture codename | Sable (2008−2009) | Granite Ridge (2024−2025) |
| Release date | 1 September 2009 (15 years ago) | 15 August 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $649 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Mobile Sempron SI-42 and Ryzen 9 9950X 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 | 1 (Single-Core) | 16 (Hexadeca-Core) |
| Threads | 1 | 32 |
| Base clock speed | no data | 4.3 GHz |
| Boost clock speed | 2.1 GHz | 5.7 GHz |
| Bus rate | 1800 MHz | no data |
| L1 cache | 128 KB | 80 KB (per core) |
| L2 cache | 512 KB | 1 MB (per core) |
| L3 cache | no data | 64 MB (shared) |
| Chip lithography | 65 nm | 4 nm |
| Die size | no data | 2x 70.6 mm2 |
| Maximum core temperature | 100 °C | 95 °C |
| Number of transistors | no data | 16,630 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Mobile Sempron SI-42 and Ryzen 9 9950X 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 | no data | 1 |
| Socket | S1g2 | AM5 |
| Power consumption (TDP) | 25 Watt | 170 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Mobile Sempron SI-42 and Ryzen 9 9950X. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 65 nm, 1.075 - 1.125 | 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 Mobile Sempron SI-42 and Ryzen 9 9950X are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Mobile Sempron SI-42 and Ryzen 9 9950X. 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 | no data | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by Mobile Sempron SI-42 and Ryzen 9 9950X.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 24 |
Pros & cons summary
| Performance score | 0.21 | 41.55 |
| Recency | 1 September 2009 | 15 August 2024 |
| Physical cores | 1 | 16 |
| Threads | 1 | 32 |
| Chip lithography | 65 nm | 4 nm |
| Power consumption (TDP) | 25 Watt | 170 Watt |
Mobile Sempron SI-42 has 580% lower power consumption.
Ryzen 9 9950X, on the other hand, has a 19685.7% higher aggregate performance score, an age advantage of 14 years, 1500% more physical cores and 3100% more threads, and a 1525% more advanced lithography process.
The Ryzen 9 9950X is our recommended choice as it beats the Mobile Sempron SI-42 in performance tests.
Be aware that Mobile Sempron SI-42 is a notebook processor while Ryzen 9 9950X is a desktop one.
Should you still have questions on choice between Mobile Sempron SI-42 and Ryzen 9 9950X, ask them in Comments section, and we shall answer.
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