Depends oin your rig and what you are doing - dual channel can provide a boost up to about 10% or more, depending. As far as 1x8GB - it offers no guarantees as to an upgrade path as even if you get an identical stick of the same exact model there's no guarantees the new will play with your old stick. I wrote about this in my Fiction article - see items 2 & 6 in particular
Depends oin your rig and what you are doing - dual channel can provide a boost up to about 10% or more, depending. As far as 1x8GB - it offers no guarantees as to an upgrade path as even if you get an identical stick of the same exact model there's no guarantees the new will play with your old stick. I wrote about this in my Fiction article - see items 2 & 6 in particular