RX 480 G1 Crashes.

It always crashes in every game. It only happens when power consumption reaches 127W, then driver gets restarted. I can deal with it by downvolting GPU. But i want to know: why does my card crash, while other cards can reduce frequency to stay within powerlimit? What should i do to prevent crashing? I just don't want to change wattman options. Can the card work with default settings?