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.
âBattery lifeâ is the amount of time your device runs before it needs to be recharged. âBattery lifespanâ is the amount of time your battery lasts until it needs to be replaced. Maximize both and youâll get the most out of your Apple devices, no matter which ones you own.