12VHPWR

[LeinaWaffles]

Hear me out. What if somebody were to build a 12VHPWR connector with 10AWG cables. Correct me if I'm wrong, but will it work in terms of engineering standpoint?

[Levent]

problem is not the cables, its the connector.

[Somerandomtechyboi]

I dont think adding thicker wires will solve the burning issues on the 12VHFLR connector cause its the connector itself thats burning

[Kilrah]

The above, and the connector can fit AWG16 max.

[manikyath]

problem isnt wire gauge, it's how said wire gauge is connected.

 

commoning the pins together on both sides of the connector would help a lot for the melty wire problem, but that still leaves the melty connector problem.

 

however... RTX5090-XT120?

[DEADPOOLSMOM]

The connector is dogshit, they need to rethink the whole thing. 

[OhYou_]

the connector itself allows for some variation in resistance between contact positions (pins).
This escalates as the same issue stacks at the power supply side. Finally the power supply itself could have key issues in pcb trace layout where the 12v is distributed.
What all this means is that you can and will see load balancing issues across the six individual pairs of wires. It's physically unavoidable.

The way to mitigate this is ultimately at all ends. starting from the gpu, all positions of the +12v rail should be bridged as soon as possible after the connector, as well as the ground return, which they are, so the only consideration further is quality control an increased bridge sizing since it tapers down and also connects to the pcb at one side which could introduce minor balance differences.
the gpu end of the cable should have the same, all six +12v wires should end into a bridge and then enter into the pins, same with the return. This is not done.
at the psu side if applicable (modular), all wires of their respective rails should end into a bridge before going into pins.
and finally at the power supply side, design considerations should be made to prevent or mitigate load differences due to physical separation where three +12v pins go into one 8 pin connector and three go into another 8 pin which have significant differences and pcb layout restrictions.

The first step to reducing this issue is to implement a 12v2x6 at the power supply end, or eliminate the connector as in semi-modular design.
The next safest thing is to implement connector design changes which accommodate a bridge at each end of all +12v rail positions and all gnd return positions.
The final step would be to stop using individual wires all together, and instead use one single sufficiently rated wire for each rail between the psu and the gpu. You can still maintain the 12vhpwr but all rail respective pins bridge together and connect into the single wire.

[thrasher_565]

also the duming down of safety protections... for "cost" saving...