The differences between the GM470PC and GM570PC are subtle but just recognizable. There's plenty of room under the hood, which did trouble me somewhat in a casing this size. Taking a closer look we find the secondary inductors differ on each unit. I've outlined these differences focusing on the output stage capacitance and inductor. Below the GM470PC
has been outlined in green.
Next we have the GM570PC
it’s evident the secondary inductor on its output stage is somewhat larger. Below the capacitor arrangement and inductor have been outlined in orange.
from a side view.The GM570PC
from a side view
Looking at the G470PC from the AC input stage (bottom right), the green and blue wires can be seen running from the AC-inlet on the opposite end (top right) over the heat spreaders to the thyristor
and bridge rectifier stage. The rectifier seems to have a heatsink on it which may be indicative of a design compromise.
As stated earlier the G570PC from the same angle shows the topology to be identical in both power supplies, with a slightly different parts spec. Note the rectifier (also heat-sinked) is much larger on the GM570 although capacitance remains equal.