Why VDDC Changing?

[insaniak]

In my bios I set the Memory Voltage to 950 for my GPU, but it is going up to 980 mV. What is causing this?

[RentGPU]

In my bios I set the Memory Voltage to 950 for my GPU, but it is going up to 980 mV. What is causing this?

It's normal that the card while doing hard work needs some more voltage to throttle , there is an option in the afterburner to force a constant voltage , normaly throttle voltage will be in a small range higher than setted voltage

[Vaccinus]

any card will start to throttle if you reduce the TDP, because they are not mean to be run at that power limit, you need to find the good compromise between the clock and the power used, but under 60% tdp i always see throttling

[insaniak]

So basically throttling can be a good thing to prevent crashes? 

[powershot]

Go to, Radeon, Settings, games, Global, wattman, disable any dinamic settings.
Go to Afterburner and set more Power Limit, be care with high values.

If you overclock settings only.

[RentGPU]

So basically throttling can be a good thing to prevent crashes? 

Thats right , you should give the card some air to breath  , don't set to constant voltage because your hashrate will flactuate much more while hard work is in progress