technically yes ,but that would be when overclocking infinity fabric/memory controller beyond 3000 mhz in 1:1 gear (above ddr5 6000), which by default switches to 1:2 and doesnt need extra voltage eitherSure, Vsoc may not be just the memory controller, but it includes the memory controller, yes?
"SOC voltage - system on a chip voltage; responsible for the voltage related to the memory controller." https://www.techpowerup.com/review/amd-ryzen-memory-tweaking-overclocking-guide/2.html
"Specifies the SoC/Uncore voltage (VDD_SOC) in mV to support memory and Infinity Fabric overclocking.” https://dlcdnets.asus.com/pub/ASUS/mb/Socket AM5/ROG CROSSHAIR X670E EXTREME/E20466_ROG_CROSSHAIR_X670E_Series_BIOS_manual_EM_WEB.pdf?model=ROG CROSSHAIR X670E EXTREME
"Allows you to specify the SoC/Uncore voltage (VDD_SOC) to support memory and Infinity Fabric overclocking" https://download.asrock.com/Manual/Software/AMD X670/Software_BIOS Setup Guide_English.pdf
Also, given that VDDG cannot be higher than Vsoc, wouldn't that mean you might need to increase Vsoc just to get the VDDG you want?
The person I responded to said Vsoc is not related to RAM in any way, that is clearly not the case.
vsoc also has igpu