General undervolting question

[PorkPieCat]

If you're undervolting a card to achieve a stable and non-throttling, yet cool and less power hungry clock speed, where should the power limit be set? My HD 7950 is stable at 906mv 880mhz/1250mhz with +0% power limit. Should I leave it there or could I do better?

Thanks

 

[ArchAndroid]

I think PowerTune is a ceiling on the maximum voltage so it may be that you have effectively taken your card under the -20 limit already.

 

[PorkPieCat]

Yeah I've done some reading and I think you're right. I think it's a ceiling on power draw rather than voltage though? In any case it won't do a thing to my underclock. Thanks for the reply

 

[ArchAndroid]

Yeah I've done some reading and I think you're right. I think it's a ceiling on power draw rather than voltage though? In any case it won't do a thing to my underclock. Thanks for the reply

I'm not 100% sure how exactly it limits the card but it does set a hard limit for maximum wattage so you are most likely correct.

However it's set, your card at those settings shouldn't need PowerTune at all.