Tiger and processor upgrade cards

Before the official launch of tiger, rumors were spreading that Tiger will not be compatible with processor upgrade cards. This is of course wrong. But as usual, Apple does not bring support to modified computers.
Hereafter is a screenshot of a Cube, upgraded with a Gigadesigns cards, running MacOSX 10.4 "Tiger".

Everything works perfectly. The only missing piece of information is related to the "processor type": PowerPC60?