That number really needs to stop being thrown around. It came from someone taking a snippet of a post by The Stilt out of context.

[No, 1.325V is NOT THE MAX. This is conjecture by some random person on the internet for 24/7 overclocks.]

Aaand for the person that number originally came from:

[>1.325

Speaking of the "broken telephone" effect...

The person who originally quoted my post either didn't fully understand what was being said, or alternatively didn't read it completely. Since then the misunderstood / misquoted post has been gaining momentum here at Reddit.

What was actually said:

"According to FIT, the safe voltage levels for the silicon are around 1.325V in high-current loads and up to 1.47V in low-current loads (i.e ST), depending on the silicon characteristics.](https://www.reddit.com/r/Amd/comments/ciajef/comment/evgi8tk)