Quote Originally Posted by Behemot View Post
I personally don't understand this pin kind of thing. The best PSU's are that with one 12V rail. But I think most of the multi-rail PSU's have all wires in single PCIe power connector solded to the same 12V rail. So why is everybody messing with a milion-wire-PCIe power connector? All the wires are solded together on the PCB of the card, though. Really really stupid specification for me. If I had even 2-pin connector, I'd use dongle to 8-pin anyway. The vendors just have to be so intelligent to use enough thick wires. If they not, I'll change them.
it's because of heat, if you have all that energy going down one wire, it's going to get hot, and that means more resistance which means lower efficiency.