Hi, I have a imac g4 1.25GHz running Tiger 10.4.11. It has 256 MB in each slot = 512 MB Two questions please. Can I put 1GB of memory in the SODIMM slot and leave the 256 MB in the DIMM slot? I.e., Can the memories in the slots be unbalanced? Do you think I would see much of a speed improvement if I did this? Regards, David.