There are versions of the cables (and adapters) that work on older PSUs, although new PSUs are starting to come with the same connector that new GPUs have. Any

There are versions of the cables (and adapters) that work on older PSUs, although new PSUs are starting to come with the same connector that new GPUs have. Anyway there are pros and cons to using 12V, or lower or higher, and anything except 12V would require a new PSU so it's a hard sell. But even without that detail, I have a feeling 12V is a reasonable choice anyway, not too low or high for conversion either in the PSU or in the GPU or other component. In any case, at the end of the day sending 12V from the PSU to GPU is easy. The connector used here is bad, either by design or manufacturing quality, but surely the solution can be a better housing and/or sockets on the cable side connectors instead of a different voltage.