i9-12900K vs Mobile Sempron SI-42
Aggregate performance score
Core i9-12900K outperforms Mobile Sempron SI-42 by a whopping 12324% based on our aggregate benchmark results.
Primary details
Comparing Mobile Sempron SI-42 and Core i9-12900K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3219 | 191 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 37.31 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Mobile Sempron | Intel Core i9 |
| Power efficiency | 0.79 | 19.75 |
| Architecture codename | Sable (2008−2009) | Alder Lake, Golden Cove, Gracemont (2021) |
| Release date | 1 September 2009 (15 years ago) | 4 November 2021 (3 years ago) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Mobile Sempron SI-42 and Core i9-12900K 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 | 24 |
| Base clock speed | no data | 3.2 GHz |
| Boost clock speed | 2.1 GHz | 5.2 GHz |
| Bus type | no data | DMI 4.0 |
| Bus rate | 1800 MHz | 8 × 16 GT/s |
| Multiplier | no data | 32 |
| L1 cache | 128 KB | 80K (per core) |
| L2 cache | 512 KB | 1.25 MB (per core) |
| L3 cache | no data | 30 MB (shared) |
| Chip lithography | 65 nm | 10 nm |
| Die size | no data | 215.25 mm2" |
| Maximum core temperature | 100 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Mobile Sempron SI-42 and Core i9-12900K 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 | FCLGA1700 |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Mobile Sempron SI-42 and Core i9-12900K. 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 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
Mobile Sempron SI-42 and Core i9-12900K 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 i9-12900K 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 i9-12900K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4, DDR5 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 76.805 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel UHD Graphics 770 |
| Quick Sync Video | - | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.55 GHz |
| Execution Units | no data | 32 |
Graphics interfaces
Available interfaces and connections of Mobile Sempron SI-42 and Core i9-12900K integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Mobile Sempron SI-42 and Core i9-12900K integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4096 x 2160 @ 60Hz |
| Max resolution over eDP | no data | 5120 x 3200 @ 120Hz |
| Max resolution over DisplayPort | no data | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Mobile Sempron SI-42 and Core i9-12900K 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 i9-12900K.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 20 |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Pros & cons summary
| Performance score | 0.21 | 26.09 |
| Recency | 1 September 2009 | 4 November 2021 |
| Physical cores | 1 | 16 |
| Threads | 1 | 24 |
| Chip lithography | 65 nm | 10 nm |
| Power consumption (TDP) | 25 Watt | 125 Watt |
Mobile Sempron SI-42 has 400% lower power consumption.
i9-12900K, on the other hand, has a 12323.8% higher aggregate performance score, an age advantage of 12 years, 1500% more physical cores and 2300% more threads, and a 550% more advanced lithography process.
The Core i9-12900K 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 i9-12900K is a desktop one.
Should you still have questions on choice between Mobile Sempron SI-42 and Core i9-12900K, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
