What are people's, average undervolts on a Ryzen 2700x? So far i put on both SOC & CPU Cores 0.0875 offset voltage ( - ) and it keeps the SOC at exactly 1v / 3400Mhz Memory speed, the CPU voltage is idle at 0.750v (before 0.850v) and on light workloads ~ 1.45 / heavy loads 1.325v. However, the XFR seems to hold now much longer on 4.14Ghz all cores when running CB, this was like 4.04Ghz before. On IBT / High it holds on exact 4Ghz all cores and before this dropped back to 3.9Ghz or so.
The performance for CB obviously increased, since XFR is kicking in longer. I might play around with voltages a bit more, i think it's a mix of power consumption and thermal threshold for XFR to work it's magic. With IBT high it's sitting at 66 degrees and CB around 65 degrees. Before the UV party this was around 68 degrees.
Undervolting the SOC does nearly nothing with the temps. This is where i started first. Perhaps 0.3 degrees from going stock 1.15v to 1.0v. Peak chip wattage went from 162W back to 141W on CB.