4. RTX 3060 Ti ( 17 pieces ) > 1020MH (2040 Watts ).
That is the best option if you want a set and forget mining rig.I have had this card beside many others and it is the only one which has never given me a single problem for more than one year while all the other options as good as they maybe I think occasional crashes will still happen and this is also the lowest number of cards to achieve 1GHSH of power which also means lowest number of problems during your mining journey.
So the lower the number of graphic cards the better, what about RTX 3070s are they good options too? I can only find few RTX 3060 Ti here because many others are LHR which I don't want, I can find RTX 3070s non LHR, may be I should just mix them?.