Mobile Sempron SI-40 vs Athlon II X4 640
Primary details
Comparing Athlon II X4 640 and Mobile Sempron SI-40 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2199 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.92 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Mobile Sempron |
| Power efficiency | 1.40 | no data |
| Architecture codename | Propus (2009−2011) | Sable (2008−2009) |
| Release date | 11 May 2010 (14 years ago) | 4 July 2008 (16 years ago) |
| Launch price (MSRP) | $80 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X4 640 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 | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 1 |
| Base clock speed | 3 GHz | no data |
| Boost clock speed | 3 GHz | 2 GHz |
| Bus rate | no data | 1800 MHz |
| L1 cache | 128 KB (per core) | no data |
| L2 cache | 512 KB (per core) | 512 KB |
| L3 cache | 0 KB | no data |
| Chip lithography | 45 nm | 65 nm |
| Die size | 169 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 300 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon II X4 640 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.
| Number of CPUs in a configuration | 1 | no data |
| Socket | AM3 | S1g2 |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 640 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 |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 640 and Mobile Sempron SI-40. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 640 and Mobile Sempron SI-40.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 11 May 2010 | 4 July 2008 |
| Physical cores | 4 | 1 |
| Threads | 4 | 1 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Athlon II X4 640 has an age advantage of 1 year, 300% more physical cores and 300% more threads, and a 44.4% more advanced lithography process.
Mobile Sempron SI-40, on the other hand, has 280% lower power consumption.
We couldn't decide between Athlon II X4 640 and Mobile Sempron SI-40. We've got no test results to judge.
Note that Athlon II X4 640 is a desktop processor while Mobile Sempron SI-40 is a notebook one.
Should you still have questions on choice between Athlon II X4 640 and Mobile Sempron SI-40, 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.
