Both AMD and Nvidia have typically made do with pairs of 6-pin and 8-pin connectors in various configurations. This year, Nvidia is introducing a change, with a new 12-pin connector for Ampere.

In summary, the 12VHPWR has 12 pins, each fitting into a 3mm square spacing (8-pin Molex spacing is 4.2mm) in two rows, for a 18.85mm wide connector, which is just a tad wider than the old Molex 8 ...

A new 12-pin PCIe power adapter purportedly set to be used with the Nvidia Ampere generation graphics cards has been confirmed by a power supply manufacturer.