I heard that it is better to equip a current mac pro with memory in threes, i.e. 6 GB made up of 3x2 GB rather than pairs or fours (i.e. 8 GB made up of 4x2 GB). Not knowing the specific advantages I am wondering if anyone can advise? I am planning to buy a Mac Pro, one CPU, slowest possible, 6 or 8 GB of memory, 1 TB disk, and the 512 MB ATI video card. Is that a good idea or should I seriously consider a second CPU, more memory, two smaller hard disks instead of one?