Mobile Sempron SI-40 vs Athlon 64 TF-20
Aggregate performance score
Mobile Sempron SI-40 outperforms Athlon 64 TF-20 by a significant 25% based on our aggregate benchmark results.
Primary details
Comparing Athlon 64 TF-20 and Mobile Sempron SI-40 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3320 | 3252 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD Athlon 64 | AMD Mobile Sempron |
| Power efficiency | 0.61 | 0.76 |
| Architecture codename | Sherman (2009) | Sable (2008−2009) |
| Release date | 1 May 2009 (15 years ago) | 4 July 2008 (16 years ago) |
Detailed specifications
Athlon 64 TF-20 and Mobile Sempron SI-40 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) | 1 (Single-Core) |
| Threads | 1 | 1 |
| Boost clock speed | 1.6 GHz | 2 GHz |
| Bus rate | 667 MHz | 1800 MHz |
| L1 cache | 0.1 MB | no data |
| L2 cache | 512 KB | 512 KB |
| Chip lithography | 65 nm | 65 nm |
| Maximum core temperature | 95 °C | 100 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon 64 TF-20 and Mobile Sempron SI-40 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.
| Socket | S1g1 | S1g2 |
| Power consumption (TDP) | 25 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 64 TF-20 and Mobile Sempron SI-40. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow!, SSE, SSE2, SSE3, AMD64, Enhanced Virus Protection | 65 nm, 1.075 - 1.125V |
| VirusProtect | + | - |
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.
Pros & cons summary
| Performance score | 0.16 | 0.20 |
| Recency | 1 May 2009 | 4 July 2008 |
Athlon 64 TF-20 has an age advantage of 9 months.
Mobile Sempron SI-40, on the other hand, has a 25% higher aggregate performance score.
The Mobile Sempron SI-40 is our recommended choice as it beats the Athlon 64 TF-20 in performance tests.
Should you still have questions on choice between Athlon 64 TF-20 and Mobile Sempron SI-40, ask them in Comments section, and we shall answer.
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