Originally Posted by Aeschylus
Oh, sure. E.g., when G.Skill makes a stick of DDR3, it's 9-9-9-24 and 1600 rated, there isn't any specification that indicates it should be used for dual- or tri-channel. The dual/triple nature is just due to the memory controller.
Can you imagine you expensive it would be for a manufacturer to differentiate the two...
They do though. Dual channel and trip channel kits are marked right on the sticks. That way all 3 or both sticks are matched perfectly at the factory and put in sets from the gitgo right off the assembly line. As in CPUs, the weaker ones get thrown in the 920 (i7) bin and the good ones get thrown in the 940-950-960 bins, depending on how good they perform. If you RMA a trip or dual kit they will tell you to send all 3 or both back and they will send you a new dual or trip set back. Not because the good sticks you have will be older then the new stick you get back but because they want to give you a matched set back. Hence the 2X2GB and 2X3GB markings. Or else they wouldn't be marked, it would just be 2GB, and they would throw 2 or 3 2GB sticks in a box and send them out.
They don't. That's why the sets ARE more $ then buying 3 single sticks.