Hi, Fate has crossed my path, and has now given me the money to replace my 1st gen MacPro with a brand new one! Now, I remember all the drama last year about differing opinions about ram. How to install, how many dimms is optimal etc. I wondered what the opinions of the forum are on this matter. Apples Manual for the new macpro says 2 dimms is "optimal", but people in the forums say 4 is optimal. Also, do you need to cram it full of memory to get any sort of decent performance due to the 8 cores? I remember people talking about the addressable memory of each core making systems really laggy. I have 4gb in my quad, and it's never been a problem. So in a nutshell, 1) What dimm combo should I order from crucial when I place my macpro order 2)What amount of memory should I use 3) Is there any evidence of the claims of 2 dimms better than 4 dimms etc. THe manual is useless, and I can't see anywhere near as much info online about the new macpros ram compaired to the old systems.