What about the lifespan of a CPU?
What about the lifespan of a CPU?
It would increase durability because CPUs are usually built to withstand more stress.
This indicates reduced CPU activity while the GPU handles more work, but whether it extends device lifespan depends on other factors.
They're not always failing from the CPU itself. Many older systems, like Cray supercomputers, keep running despite heavy use for years. Most breakdowns come from other parts—solder joints breaking, liquids corroding boards, capacitors leaking or exploding. These issues are more common than a CPU malfunction. I've seen restoration videos where oxidized CPU pins were replaced and the hardware still worked perfectly afterward. It shows how durable integrated circuits can be when properly maintained.
They usually end up being replaced long before they're needed anymore. Motherboards often fail early in their life.
I understand this discussion is quite old, but feel free to share any long-term impressions... The Cray supercomputer isn't typical consumer gear. A Cyrix 486DX4-75 boosted to 100MHz lasted around five years. It ran on stock voltage with standard cooling; it failed frequently due to BSODs. The motherboard endured longer. An Intel P4 at 2.8GHz (Prescott core with HT) worked again for about five years too, though it was known to get very hot. Stock voltage and cooling were used. Another Intel S. 775 Dual Core E6500 at 45nm lasted roughly nine to ten years across two motherboards. It required slight overclocking to 3.2GHz with undervolt settings and good cooling. Much of the work was distributed computing, and it kept failing with numerous BSODs. Recently, I still use an i5-760, a first-gen iCore processor. I overclocked it slightly to 3.4GHz, ran it under load with undervolt, and got decent performance. It mostly handled stress but needed a new motherboard last year. Over time, its overclocking power dropped from 3.8GHz to 3.4GHz on a fresh board, so it now runs at 3.2GHz with undervolt. There’s an article about GPU wear when pushed nonstop, which seems to confirm what I’ve seen: heat plus voltage can eventually damage transistors. Manufacturing quality also plays a role—this equation I read about (voltage^temp × process = lifespan) is useful but doesn’t fully capture real-world effects like temperature and stress.
I have a few old laptops and desktops—about two or three each—that are still functioning perfectly. Their CPUs are still brand new, no signs of wear, and everything works smoothly. One laptop’s GPU seems to be dead, possibly due to loose solder joints on the BGA, but I haven’t tried fixing it. On the desktops, some capacitors appear damaged; they’re easy to replace if I check which ones are bad. I don’t think a CPU or motherboard has failed in just five years—this is rare. I’ve never experienced a CPU die before.
Operating at maximum capacity continuously reduces stress on the CPU by minimizing the number of hot and cold cycles it undergoes.
Your perspective on load is clear—typically it raises temperature, and occasionally voltage as well, which means load plays a role.