1 Reply Latest reply on Nov 6, 2013 11:33 AM by LynnZ

    What is the difference between DIMM per channel and Slot per channel?

    Community Member

      Hi,

       

      Inside manual of server-motherboards there is a table which determines the proper populating of memory modules in memory DIMMs. They use Slot per channel and DIMM per channel phrases that seems equivalent. Does anyone knows about the difference?

      You could see a sample of such table in this link:http://cache-www.intel.com/cd/00/00/49/00/490092_490092.pdf

       

      Thanks

        • Re: What is the difference between DIMM per channel and Slot per channel?
          LynnZ Brown Belt

          Hello!  I was able to reach a contact in  Xeon EP/EN Product Marketing and below is the explanation provided:

          Slot per channel = DIMM slots available on the server board per memory channel

          DIMM per channel = DIMMs populated in the available slots per memory channel

           

          Example:

          2 Socket server board with E5-2650 with both CPUs populated.


          Each CPU support 4 memory channels, and each channel supports 2 memory slots


          Hence total 2x4x2 = 16 slots available.

          Slots per channel = 2 in this case.

          However, out of the 16 slots, only 8 are populated, 1 DIMM in every slot for every memory channel of the CPU, and the other 8 slots remain unpopulated.

          In this case, DIMMs per channel = 1.