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GIGABYTE GA-890GPA-UD3H Memory Needed

So I am installing new memory sticks into a GIGABYTE GA-890GPA-UD3H Mobo "" . One problem I do not understand is why "DDR3 1800 (Only support DIMM3,DIMM4)" as it is listed at the GIGABYTE support site (download a pdf compatible Memory modules page) what it does not say is what is compatible for the DIMM1,DIMM2 ? Now the mobo does support dual channel and lists them as channel 0 = DDR3_1 and DDR3_3 then channel 1= DDR3_2 and DDR3_4. Does that mean if I install a matched set in dimm 1 and 2 that they will NOT be in dual channel mode ? Why are the dual channels separated instead of being in order like 1 & 2 and 3 & 4 ?
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  1. Best answer
    It differs based on manufacturer, yours;
    Channel 0 slots 1 and 3
    Channel 1 slots 2 and 4
    Default slot 3
    Default dual channel 2 sticks slots 3 and 4, 1800MHz reachable
    Four sticks all slots in dual channel. In this mode 1800MHz not reachable.
  2. Best answer selected by discboy321.
  3. This topic has been closed by Nikorr
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