OpenPOWER systems (POWER8 and up) swing both ways. That said, my POWER9 Raptor Talos II runs little endian, though it is completely capable of running big (and

OpenPOWER systems (POWER8 and up) swing both ways. That said, my POWER9 Raptor Talos II runs little endian, though it is completely capable of running big (and at the low OPAL level in fact does), and some operating systems on it support that.