afaik the issue is the 50 series connects all those pins into a single point on the board. obviously this is fine in normal operation, because power is drawn through all pins evenly. if, however the plug isnt making good connection, that significantly increases resistance across 1 or more pins. in this situation, the card has no way of knowing, and continues to draw all the power it needs, but unevenly thus overloading the cables rating
other designs connect the pins independently and measure the current across individual pins so they know if there’s a fault
afaik the issue is the 50 series connects all those pins into a single point on the board. obviously this is fine in normal operation, because power is drawn through all pins evenly. if, however the plug isnt making good connection, that significantly increases resistance across 1 or more pins. in this situation, the card has no way of knowing, and continues to draw all the power it needs, but unevenly thus overloading the cables rating
other designs connect the pins independently and measure the current across individual pins so they know if there’s a fault