Silicon doesn't age friend. Heat might degrade circuits and harms processors by thermal deformation. But most electronics are designed to stay well under the temperatures that will harm them with throttling and heat management. So, unless you're incredibly negligent with maintenance or intentionally overclocking, most electronics have a way longer potential life span than people use them for. My 15 year old desktop computer was so beefy when I build it that today it still outperforms this year's off the shelf office units in raw speed and processing power, despite being physically about 12 times larger. It's only recently that new games started to tax it beyond performance goals (60fps at 1080p), but get a lower modest expectation (800p at 30 fps) and suddenly she is back in the game. Only thing I'm missing now is lack of on-board bluetooth connectivity and usb-c ports. Even if I were to build a new one, I bet the old beast could go on as a server for decades more.