https://wccftech.com/amd-ryzen-7-5800x3d-cpu-undervolting-monster-efficency-sub-1v-same-performance-runs-cooler-lower-power/

We have shown you how the AMD Ryzen 7 5800X3D CPU can be overclocked but today, we move our attention towards its underwriting capabilities which have been demonstrated by our reader and commenter, Shaun (@Diabolical_genius).

Shaun who got his AMD Ryzen 7 5800X3D CPU a few days back, was able to undervolt it on an ASUS PRIME X570-Pro motherboard. The AMD Ryzen 7 5800X3D didn't have any overclocking capabilities but it was soon discovered that the chip does feature BCLK overclocking on select motherboards with an external clock generator. The CPU has a peak voltage limit of 1.35V to keep the 3D V-Cache from damaging itself. But undervolting is almost possible on any AM4 motherboard as showcased by Shaun.