Dual Rank vs pairs of single rank

Discussion in 'Memory' started by @sia@home, Nov 13, 2017.

  1. @sia@home

    @sia@home Member

    Joined:
    Aug 6, 2002
    Messages:
    2,405
    On the topic of x299 quad channel.

    If you put 2 sticks of single rank per channel, is it going to offer the same bandwidth increase as a single stick of dual rank? I know I'll need to loosen the timings but I have a rough ideal of what will be required there.
     
  2. dasa2

    dasa2 Member

    Joined:
    Feb 5, 2003
    Messages:
    569
    Location:
    Northern VIC
    4 dual rank sticks would be fastest with a cpu that supports quad channel
    but dual rank itself doesn't make much difference its far less than a extra channel its just another a small step a bit like 3000 to 3200 but one that can make reaching higher speeds a fair bit more difficult as it puts more stress on the memory controller
    for example 64g sr 4200 is in the memory qvl for a x299 mb while 128g dr maxes out at 3800
     
  3. OP
    OP
    @sia@home

    @sia@home Member

    Joined:
    Aug 6, 2002
    Messages:
    2,405
    Yeah I noticed the same thing for gskill quad kits

    Single rank 4x8GB PC3600 is avilable in 16-16-16-39
    Dual rank 4x16GB PC3600 is only available in 17 19 19 x

    I also saw faster kits were available in 2x8gb single rank kits (ie tight timings higher clock speed)

    My question was more, if I get and additional 4x8GB kit will I get the dual rank benefit by having 2 ranks per channel.
     
  4. dasa2

    dasa2 Member

    Joined:
    Feb 5, 2003
    Messages:
    569
    Location:
    Northern VIC
    nope
    from memory some older asus dual channel mb were advertising that they had improved performance with 4 sticks
    but the gains were a fair bit less than dual rank sticks and it was probably even harder on the memory controller lowering the max oc even further than two dual rank sticks
     

Share This Page