Ultra 9 285K vs Mobile Sempron SI-42
Aggregate performance score
Core Ultra 9 285K outperforms Mobile Sempron SI-42 by a whopping 20395% based on our aggregate benchmark results.
Primary details
Comparing Mobile Sempron SI-42 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3219 | 54 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 74.27 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Mobile Sempron | no data |
| Power efficiency | 0.79 | 32.56 |
| Architecture codename | Sable (2008−2009) | Arrow Lake-S (2024−2025) |
| Release date | 1 September 2009 (15 years ago) | 24 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Mobile Sempron SI-42 and Core Ultra 9 285K 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) | 24 (Tetracosa-Core) |
| Performance-cores | no data | 8 |
| Efficient-cores | no data | 16 |
| Threads | 1 | 24 |
| Base clock speed | no data | 3.7 GHz |
| Boost clock speed | 2.1 GHz | 5.6 GHz |
| Bus rate | 1800 MHz | 250 MHz |
| L1 cache | 128 KB | 112 KB (per core) |
| L2 cache | 512 KB | 3 MB (per core) |
| L3 cache | no data | 36 MB (shared) |
| Chip lithography | 65 nm | 3 nm |
| Die size | no data | 243 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | no data | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Mobile Sempron SI-42 and Core Ultra 9 285K 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 | FCLGA1851 |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Mobile Sempron SI-42 and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 65 nm, 1.075 - 1.125 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| AVX | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
| Supported AI Software Frameworks | - | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN |
Security technologies
Mobile Sempron SI-42 and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Mobile Sempron SI-42 and Core Ultra 9 285K are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Mobile Sempron SI-42 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5-6400 |
| Maximum memory size | no data | 192 GB |
| Max memory channels | no data | 2 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® Graphics |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 2 GHz |
Graphics interfaces
Available interfaces and connections of Mobile Sempron SI-42 and Core Ultra 9 285K integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Mobile Sempron SI-42 and Core Ultra 9 285K integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4K @ 60Hz (HDMI 2.1 TMDS) 8K @ 60Hz (HDMI2.1 FRL) |
| Max resolution over eDP | no data | 4K @ 60Hz |
| Max resolution over DisplayPort | no data | 8K @ 60Hz |
Graphics API support
APIs supported by Mobile Sempron SI-42 and Core Ultra 9 285K integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Mobile Sempron SI-42 and Core Ultra 9 285K.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Performance score | 0.21 | 43.04 |
| Recency | 1 September 2009 | 24 October 2024 |
| Physical cores | 1 | 24 |
| Threads | 1 | 24 |
| Chip lithography | 65 nm | 3 nm |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Mobile Sempron SI-42 has 400% lower power consumption.
Ultra 9 285K, on the other hand, has a 20395.2% higher aggregate performance score, an age advantage of 15 years, 2300% more physical cores and 2300% more threads, and a 2066.7% more advanced lithography process.
The Core Ultra 9 285K 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 Core Ultra 9 285K is a desktop one.
Should you still have questions on choice between Mobile Sempron SI-42 and Core Ultra 9 285K, ask them in Comments section, and we shall answer.
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