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.
Best Answer: well it depends, gaming computer last about 2-3 years and upgraded every year. most home computer can last much longer like 3-5 years. after that its rly getting outdated. Depending on what you do, how long it will last. If all you ever do is browse the internet and check email, you could theoretically keep using the same computer for a long time. If you play games, you'll need a new one every year or two to keep up. So, the mission defines how long you can keep the same computer without it being outdated. The other factor is how well you take care of the computer. If you treat it well, it will last a long time. If you mistreat it, it won't last as long.