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.
Long life batteries last a minimum of four hours if used according to the manufacturerâs specifications, while extra-long life batteries can last five hours or more if used correctly. While most major manufacturers offer long life batteries, only a few makers, such as HP and Lenovo, offer extra-long life batteries.onclusion. For many on-the-go users, laptop battery life is one of the most important factors to consider when purchasing a new computer. All of the most popular laptop manufacturers, including HP, Apple, Toshiba, and Lenovo, offer models that provide more than four hours of battery life when used to run simple tasks.