The memory all tests just fine.

We have 4 slots, 1,2,3,4.

I can have any stick in any slot and not matter what stick is in what slot, it tops at 1GB.

With only 3 lots being recognized as filled.

Ex:

512 slot 1

256 slot 2

256 slot 3

256 slot 4

would tell me 1GB available, slot 2 not in use.

Leaving the stick in slot 2 alone I move like this:

256 slot 1

256 slot 2

512 slot 3

256 slot 4

now slot 1 is not recognized. Still 1GB available.

So all the ram works in all the slots however I cannot get all 4 slots to activate at the same time and the deactivated slot is random.

I might try 4x256 and see if all 4 slots are recognized, but I want to be able to have at least 1.5GB or 2GB (max in OS X, in OS 9 it is 1.5GB) to help with minimizing disk swapping and to help the somewhat slow-ish 450MHz G4 out.