Mobile Sempron SI-40 vs Celeron M U3400
Aggregate performance score
Celeron M U3400 outperforms Mobile Sempron SI-40 by a considerable 45% based on our aggregate benchmark results.
Primary details
Comparing Celeron M U3400 and Mobile Sempron SI-40 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3121 | 3239 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron M | AMD Mobile Sempron |
| Power efficiency | 1.52 | 0.76 |
| Architecture codename | Arrandale (2010−2011) | Sable (2008−2009) |
| Release date | 24 May 2010 (14 years ago) | 4 July 2008 (16 years ago) |
Detailed specifications
Celeron M U3400 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 | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Boost clock speed | 1.06 GHz | 2 GHz |
| Bus rate | 2500 MHz | 1800 MHz |
| L2 cache | 512 KB | 512 KB |
| L3 cache | 2 MB | no data |
| Chip lithography | 32 nm | 65 nm |
| Die size | 81+114 mm2 | no data |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | 382+177 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron M U3400 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 | BGA1288 | S1g2 |
| Power consumption (TDP) | 18 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron M U3400 and Mobile Sempron SI-40. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | 65 nm, 1.075 - 1.125V |
| Enhanced SpeedStep (EIST) | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Celeron M U3400 and Mobile Sempron SI-40 technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron M U3400 and Mobile Sempron SI-40 are enumerated here.
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron M U3400 and Mobile Sempron SI-40. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
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 | 0.29 | 0.20 |
| Recency | 24 May 2010 | 4 July 2008 |
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 32 nm | 65 nm |
| Power consumption (TDP) | 18 Watt | 25 Watt |
Celeron M U3400 has a 45% higher aggregate performance score, an age advantage of 1 year, 100% more physical cores and 100% more threads, a 103.1% more advanced lithography process, and 38.9% lower power consumption.
The Celeron M U3400 is our recommended choice as it beats the Mobile Sempron SI-40 in performance tests.
Should you still have questions on choice between Celeron M U3400 and Mobile Sempron SI-40, ask them in Comments section, and we shall answer.
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