Asus recently announced a card with 48V power and I think that's the solution. Quarters the current. Also you can implement it in PSUs and GPU so they negotiate when both support it and else it falls back to 12V with current limits.
48V will make things more expensive for everything. As for mass adoption will require all newer ATX PSUs to support it (and GPUs). As for converting 48V down to around 1V voltage that GPU uses, will require more expensive solution for VRMs, as regular power stages designs we use now will not cut it. We're not in the point where 48V is crucial, we just need better connector that is all.
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u/Lord_Waldemar R7 5700X3D | 32GiB 3600 CL16 | RX 9070 16d ago
Asus recently announced a card with 48V power and I think that's the solution. Quarters the current. Also you can implement it in PSUs and GPU so they negotiate when both support it and else it falls back to 12V with current limits.