You can drop your AM5 CPU temps by like 20–30°C in about 5 minutes and very often get more FPS at the same time. In this 2026 updated guide, I walk you through the exact BIOS menus (the AMD Overclocking submenu that’s basically the same on every board now) and show two undervolt profiles that work on pretty much every Ryzen 7000–9000 chip and every AM5 motherboard—B650, X670/X670E, B850/B850E, X870E, even weird AliExpress boards and APUs. First I show my static undervolt method (best for temps): set a fixed frequency/voltage and then stress test in Windows, adjust if you crash. The “don’t overthink it” starting points are 1.20V for tuning performance, or 1.05–1.10V if you’re here for maximum efficiency and temperature drops (with ~4.8–5.0GHz being the usual sweet spot depending on 7000 vs 9000 series). Then I switch to the dynamic method (best for performance): PBO Advanced + Curve Optimizer (all-core, negative), plus the key extras—unlocking power limits, keeping scalar sane (I like 1X; 2X for heavy CPU loads), and a safe boost override (+100 for 7000, +200 for 9000). I also cover the basic RAM sanity check (EXPO first, test stability), and the quick FCLK 2000 / UCLK=MCLK tip for smoother FPS.