The problem isn't with older PSUs, they can work fine with a good adapter.
The problem is with the adapter design, it is not just one bad choice but multiple layers of negligence that compound the issue.
* The adapter has 6 pins all bridged together by thin connections that can break.
* 4 heavy gauge wires are attached to those pins with a surface mount solder joint. They're not through hole soldered which would provide more contact AND far greater strength. They're not crimped which would provide the best contact and strength.
* There's no strain relief. So if you hold the cables close to where they're soldered to the connector and flex it you can easily break those surface mount solder joints.
* Because the 6 pins / 4 wires are all bridged asymmetrically, some bridges have more current passing through them and if they're fatigued or damaged they'll have higher resistance. Higher resistance means more heat.
Overall it's just really poorly engineered on multiple levels. It's diarrhea poured over-top an open face shit sandwich.
Yep. In general whenever you rely on a solder joint to provide mechanical strength or support, you're in a state of sin. Running 600 watts through such a connection is pure negligence.
The problem is with the adapter design, it is not just one bad choice but multiple layers of negligence that compound the issue.
* The adapter has 6 pins all bridged together by thin connections that can break.
* 4 heavy gauge wires are attached to those pins with a surface mount solder joint. They're not through hole soldered which would provide more contact AND far greater strength. They're not crimped which would provide the best contact and strength.
* There's no strain relief. So if you hold the cables close to where they're soldered to the connector and flex it you can easily break those surface mount solder joints.
* Because the 6 pins / 4 wires are all bridged asymmetrically, some bridges have more current passing through them and if they're fatigued or damaged they'll have higher resistance. Higher resistance means more heat.
Overall it's just really poorly engineered on multiple levels. It's diarrhea poured over-top an open face shit sandwich.