Thank you all for your information.
All higher-end gpus have 2 or 3 connections, so if for example i power 1x3070 which has 2 connections there should be no melted connectors? because 2 connectors would be able to support up to 300W?
If so, then this melted connector problem should only apply to really powerful cards, like 3080ti, 3090
the 3070 should never be clocked over 200 watts when mining.
so 1 cable with 2 jacks will be fine.
a 3080 does 225-250 so 1 cable is not so good
a 3080 ti does 240-280 so 1 cable is not good
a 3090 does 270-320 so 1 cable is not good.
a 3090 ti does 300-350 so 1 cable is not good.
if i run a 3080 I like using one jack eight pin cables two of them.
if I use a three jack card that pulls over 300 watts.
a 3090 and a 3090 ti . i like two cables with two jacks each
that is 4 jacks i merge one jack from each cable to a eight pin cable.
and i use the other two jacks alone
this insures half the load on each cable so a 350 watt load is 175+175 and safe
if you don’t spilt the load that way you could pull too much on one of the cables.