my mobo says it supports dual channel memory, so I have 2 2gb ram dims but now I want to get another 2 pack of 4gb ram to get it up to 8gigs. Is there any problems here? Same type of ram same everything.
It would work, but may make your pc slower. Are the two dims working at the same freq and latency? if so then it won't be slower, but it may otherwise. I wouldn't recommend it, instead I would just get the new dims and replace the old ones, that way it would work fine, just a bit of new setup.
samee same frequency model latency everything
same timings and voltages?