Hello John
hyperAdminDoes this mean that I can't just add 8GB of RAM to sockets A7, A8, B7 and B8 ?
Yes, as long as all DIMMs are Registered/Buffered DIMMs you can populate it like that. It is preferred to put larger DIMMs before smaller DIMMs, so I would suggest putting the 8GB DIMMs in {1,2} and the 2GB in {4,5,6}, {7,8,9}.
Thanks