When Nvidia or AMD launch a new GPU, there’s a typical rollout pattern. The first cards out the door are reference designs, based on a package Nvidia and AMD provide. Later, companies like MSI, Gigabyte, EVGA, Asus, and PowerColor debut their own custom designs. These custom boards are generally clocked higher, have better, quieter coolers, or may be built on a custom smaller PCB. This time around, however, AMD’s board partners are reportedly having major trouble sourcing GPUs.