For each brand power limiting react differently, so its a bit hard to use same settings, for instance Gainward phenix 1070 with power limit at 85% droping voltage to 0.92v (GPU-z readings) which might be unstable for clock over 1900mhz, even more power limit of 75% will drop it as low as 0.84v
I did some tests with lybr and 85% and 1900mhz is stable, but other light algo might push clock more and restart the PC
For instance MSI 1070 does not drop voltage at all that low with power limit