How to configure 2 sets of dual channel memory? (Gigabyte mobo)

Pretty simple question, just I'm a bit confused.

I'm installing two sets of dual channel memory (G.Skill F3-10666CL9D-8GBRL) into my motherboard (Gigabyte GA-Z68X-UD3H-B3). In the instruction manual that came with the mobo the physical layout is:

DDR3_4, DDR3_2 || DDR3_3, DDR3_1

And the channels, similarly, are billed as:

Channel A: DDR3_2, DDR3_4
Channel B: DDR3_1, DDR3_3

BUT if a user is installing dual channel memory it suggests installing the pair into either: 3_2/3_1 (or 3_4/3_3).

My question is, which sets of slots should I use for each pair I have? Do I install them one pair per channel (one set to Channel A and one set to Channel B)? Or do I install pairs across channels (each as an AB channel setup — one set to 3_2/3_1 and one set to 3_4/3_3)?
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More about configure sets dual channel memory gigabyte mobo
  1. I would just run the matched pairs in each set of slots that are next to each other. They are separated by a wider space. Gigabyte should have made them color coded, but I guess it didn't match the rest of the board's color scheme.
  2. If the i/o bracket is the back of the board and the ATX connector is the front then the order from back to front on your ram slots is


    k114 has the answer you're looking for I think.
  3. Best answer
    Well you have 4 identical sticks so actually it doesn't matter in your case.

    But the manual is saying 1+2 is one pair and 3+4 is the other pair. To utilize both channels ie dual channel you want a stick in both channels; A and B. Channel A is 2+4 and channel B is 1+3. Weird numbering system gigabyte has going on usually its 1-2-3-4. But it's the same as the other z68 mobos that are color coated. One pair in the white slots, the other pair in the blue slots.
  4. k1114 said:
    To utilize both channels ie dual channel you want a stick in both channels; A and B.

    Ah! That makes so much sense. ::facepalm:: And the colored mobo was also really helpful. Thanks so much!

    Also, I have to say your Hobbes avatar really accentuates the advice you give.
  5. Best answer selected by BobToe.
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