Mobile Sempron SI-42 vs Xeon E3-1280
Aggregate performance score
Xeon E3-1280 outperforms Mobile Sempron SI-42 by a whopping 1586% based on our aggregate benchmark results.
Primary details
Comparing Xeon E3-1280 and Mobile Sempron SI-42 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1529 | 3215 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.13 | no data |
| Market segment | Server | Laptop |
| Series | no data | AMD Mobile Sempron |
| Power efficiency | 3.51 | 0.79 |
| Architecture codename | Sandy Bridge (2011−2013) | Sable (2008−2009) |
| Release date | 3 April 2011 (13 years ago) | 1 September 2009 (15 years ago) |
| Launch price (MSRP) | $450 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E3-1280 and Mobile Sempron SI-42 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 | 8 | 1 |
| Base clock speed | 3.5 GHz | no data |
| Boost clock speed | 3.9 GHz | 2.1 GHz |
| Bus rate | no data | 1800 MHz |
| L1 cache | 64 KB (per core) | 128 KB |
| L2 cache | 256 KB (per core) | 512 KB |
| L3 cache | 8 MB (shared) | no data |
| Chip lithography | 32 nm | 65 nm |
| Die size | 216 mm2 | no data |
| Maximum core temperature | 74 °C | 100 °C |
| Number of transistors | 1,160 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon E3-1280 and Mobile Sempron SI-42 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 | LGA1155 | S1g2 |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E3-1280 and Mobile Sempron SI-42. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX | 65 nm, 1.075 - 1.125 |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | + | no data |
| FDI | - | no data |
| Fast Memory Access | + | no data |
Security technologies
Xeon E3-1280 and Mobile Sempron SI-42 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Identity Protection | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E3-1280 and Mobile Sempron SI-42 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 Xeon E3-1280 and Mobile Sempron SI-42. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 32 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21 GB/s | no data |
| ECC memory support | + | - |
Peripherals
Specifications and connection of peripherals supported by Xeon E3-1280 and Mobile Sempron SI-42.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 20 | no data |
Pros & cons summary
| Performance score | 3.54 | 0.21 |
| Recency | 3 April 2011 | 1 September 2009 |
| Physical cores | 4 | 1 |
| Threads | 8 | 1 |
| Chip lithography | 32 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 25 Watt |
Xeon E3-1280 has a 1585.7% higher aggregate performance score, an age advantage of 1 year, 300% more physical cores and 700% more threads, and a 103.1% more advanced lithography process.
Mobile Sempron SI-42, on the other hand, has 280% lower power consumption.
The Xeon E3-1280 is our recommended choice as it beats the Mobile Sempron SI-42 in performance tests.
Be aware that Xeon E3-1280 is a server/workstation processor while Mobile Sempron SI-42 is a notebook one.
Should you still have questions on choice between Xeon E3-1280 and Mobile Sempron SI-42, ask them in Comments section, and we shall answer.
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