I achieved 2700Mhz with 980mV on ASRock 7900 XT. I was able to run it on 970mV without crashing but I noticed periodic stutters when benching Heaven and when gaming, on Spider-Man Remastered I had a hard freeze for a second. My goal is to run it on stock frequency with as low voltage as possible but I see some people are able to run higher frequencies with my voltage.
I'm not sure what the minimum frequency should be, I currently have it on 500Mhz below the max (2200Mhz) because Ancient Gameplays told me to.
I'm also not sure if I should keep lowering voltage until I straight up crash and call it good, or if I should pay attention to the performance to see if there are any noticeable stutters, drops, hitches etc.