  A pair is just the minimum. You can put 3 DIMMs in the bank. 1 DIMM in a bank is not a supported configuration and should only be used for troubleshooting.   That is how it works, so you do get it. Sorry if I am being confusing. Maybe the part that is confusing is that you cannot mix memory within a bank. All of the DIMMs within a bank must be identical.   dmidecode should show the system BIOS as well. dmidecode --type 0 Here is a sample output:
I need to expand the RAM on a pair of PowerEdge R610 servers.  They're dual processor, with 6x4gig used for 24gigs available.  The upgrade that I'm looking at is 2 16 gig sticks, for a total of 56 gigs. After reading the manual, I'm not sure that just adding 2 16 gig sticks is the right move: Is there a smarter way to get to the goal of +32 gigs than 16x2, and if so, why?
Poweredge R610 memory expansion