I was wondering if how the address bus works and how RAM is placed into memory and fetched, if order of placement of memory affects performance. For example if you have a 256MB DIMM and a 128MB DIMM (both of the same speed). Placing the 128MB DIMM in the first DIMM slot and the 256MB DIMM in the second, wouldn't the chipset that handles memory reads and writes have a slight performance gain with the memory with the 128 since it is smaller size DIMM and the task of reading and writing with it would be quicker? This is just what I think may happen but I am not sure if it's true.