Just thought I'd help clarify...
Does this mean I have to purchase one more module of RAM (to make it 4 DIMMS)?
Tri-channel memory (3 slots) seems to only be available on the i7 boards (the 1366 socket ones) but I see no reason why it shouldn't work on your board. It just won't run in tri-channel mode.
Correct Neil, ideally triple channel sets are sold for the i7/X58 triple channel setup, but really there is no reason why you can't use that RAM on a i5-i7/P55 dual channel setup. It's really a matter of just matching the number of slots on the board equally, but not a necessity.
If installing 3 memory card sticks in a dual channel system (i.e. slot 1, slot 2, slot 3, slot 4), what is the optimal way to install the memory cards so that 2 will be operating in dual channel and the remaining one will be operating in single channel?
You actually found this answer, and didn't even know it.
If using 4 DIMMS (Dual Channel), install into DIMM slots 2, 1, 4, and 3
So you just don't use the last one... which is 4. So install in 1, 3, and then the single Ram stick goes in 2. See? 1, 2, 3. Exclude DIMM 4. EDIT:
I notice the above quote goes, 2,1,4,3... so it might actually be 2,1,4, exclude 3. Whichever the case, if you install in a wrong slot, it's not going to blow anything up... it's really just trial and error if you don't have a manual. No big deal.
Can you link me to your exact motherboard? I'll confirm. Also, a link to your memory would be nice too. Thanks.
Edited by Ferrari, 15 February 2010 - 01:10 AM.