Gman, Since installing the new memory, It seems to me I had more speed when I had more memory even though it was single (hence the two 512 sticks that did not match), now I have the two 256 sticks that do match, each of these combos were with the two new 1 gig sticks that matched. My question is , Is it worthwhile then to purchase two sticks of 512 mg that match to increase the memory or even two more 1 gig sticks since the computer will take 4 gigs? I know you said optimal was 2 gig for XP but what do you think?, is it worth the cost of the purchase. I told my brother about redoing the memory sticks and he was a bit confused as was I since we had originally put the two sticks in the first two slots in the computer that were numbered 1, 3. I tried to explain to him about maybe the computer being numbered different than the program that analyzed it. I was also trying to find in a manual online somewhere where it might explain the numbering in this computer Dell, 4200i. ? --------------------------------------------------------------- Please remember to trim your replies (including this sentence and everything below it) and adjust the subject line as necessary. To unsubscribe or change your email settings: //www.freelists.org/webpage/pctechtalk To access our Archives: http://groups.yahoo.com/group/PCTechTalk/messages/ //www.freelists.org/archives/pctechtalk/ To contact only the PCTT Mod Squad, write to: pctechtalk-moderators@xxxxxxxxxxxxx ---------------------------------------------------------------