I've tried undervolting a CPU to reduce power consumption and lower temperatures. After lowering the voltage, I noticed the system ran cooler and quieter, with no noticeable drop in performance for everyday tasks like browsing or working on documents. It helped extend the lifespan of the CPU by keeping it at lower temperatures, which was a bonus. If you're thinking about undervolting, my advice would be to go slow and test each step. Start with small adjustments and monitor stability using stress tests. It's important to find a balance-too much undervolting can cause instability, so always make sure everything runs smoothly before pushing further.