I did a scan and it told me Each memory slot can hold DDR2 PC2-5300, DDR2 PC2-6400 with a maximum of 1GB per slot. heres the url of the scan results http://www.crucial.com/systemscanner/viewscanbyid.aspx?id=53D7D8E531D926C3 it says I have 2 1GB DDR2 PC2-6400 installed. it picked out 2 1GB DDR2 PC2-5300 for me to put in my cart, but couldn't I put 6400s in or are my 2 free slots only take 5300, if I can wouldn't it be better to have them all the same or not? also about placement, in my computer the 4 memory slots from left to right, theres 2 slots the a group, then a space then 2 more slots in a group. well the 2 1GBs in there are in the 1st and 3rd slots (first slot in both groups), and when I put new ram in should I put them in the 2nd and 4th slots? because I thought I needed to do them in pairs, and I thought that meant in the same group. I dunno though I'll post a pic in a minute to show.
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