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.
Purpose End-of-life care characteristics and palliative care. (PC) utilization of elderly acute myeloid leukemia (AML) patients have rarely been reported. The aim of this study was. to evaluate the cause of death, place of death and PC utiliza-. tion of older adults (age 60 years or above) suffering from. AML.