Ok so here is my story. I have 2 GB Ram in my MBP My GF has 2x512 in her CD MB and her parents have 1x512 in their CD mini Everyone needs memory but me! But i was thinking I could by a 2GB stick and use a 1GB stick that I recently bought to put in my GFs MB...take out one of her 512 and put it in the mini. Everyone makes out! I have a couple of questions (please answer any you can): 1. Will I notice the extra GB in my machine even though I rarely use all my memory? 2. Is it ok to have a 1GB stick and a 512MB stick paired up? 3. Is the 1GB in the mini enough to run leopard well? 4. Does apple care about other memory installed when doing repairs? --even if it is original apple memory (like it will be in the mini) Thanks for any help.