hi there and thnks for ahelp as ususal,
just wondering about memory slots...
usually they have to come in pairs?and be the same-matching 2700 with 2700 and so on.
my motherboard asus a7n8x-x has 3 x184 pin dimm sockets max 3gb pc3200/2700/2100/1600pc ddr ram memory.
as i read that we have to put them in pairs, why is there 3 socets instead of 2/4(pairs)??
i have at the moment 2x256 pc2100.what happens if i put another stick of pc2100?
do i have 768?

is it good to have 3 sticks?(i know more memory is in general beneficial)
pls excplain little bit
thnks