The memory riser population rules for the server are as follows:
Each CPU has two dedicated memory riser card slots (MR0 and MR1).
The dedicated memory riser slots for each installed CPU must contain a memory riser card.
A two CPU system must contain four memory riser cards
A four CPU system must contain eight memory riser cards
When populating the server with memory riser cards:
First populate riser slot MR0 for each CPU, starting with the lowest numbered CPU (P0).
Then populate riser slot MR1 for each CPU, starting with the lowest numbered CPU (P0).