There were four basic materials that the Egyptians used to build the pyramids: limestone, pink granite, basalt, and alabaster. Each type of material had a diverse use. Limestone had, for the most part, two uses.
To answer your question: The useful lifespan of a CPU is about 3-4 years. My guess on the technical lifespan under full load is closer to 8-10 years if nothing else breaks and takes the CPU with it. The reasons: High Performance Computing Clusters usually keep the computers for 3-4 years.
1. The average life-span is typically 6-7 years or more. Depending on what your OS you have support for it vary. Now the average hardware will advance to the point of certain age that you need to upgrade.You can keep your laptop in good condition is will last you 10+ years.he average life-span is typically 6-7 years or more. Depending on what your OS you have support for it vary. Now the average hardware will advance to the point of certain age that you need to upgrade.