The answer to your question is this: Some mother boards support Dual Channel memory. You can tell at a glnce because they have 4 memory sockets. 2 orange and 2 purple. You can populate these as you wish, but is you want, you can buy 'matched pairs' of memory, puting each of the pairs in the same colour socket. The bios will recognise the matched pair and operate your memory accordingly (twice the operation per cycle I think). As I said, you are supposed to get a matched pair, see this link to ebuyer click here I didnt realise this when I bought the bits for my machine and just got two memory sticks of DDR400 512MB (they are the same brand and type, bought at the same time). The bios seems to still operate these as a matched pair. There doesnt seem to be much price difference between the two anyway so to be on the safe side it might be better to go for a genuine matched pair. Good luck, Garry.
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