Ok so I've been having weird crashes and restarts ever since I installed my OWC RAM a couple months ago...my iMac seems to be worse with it. This is the RAM I got...I know I didn't get the Samsung brand but the brand I got in mine was 2 x 2GB of ELPIDA so I thought the OWC Brand would work just fine. I thought that maybe the Banks were mismatched...but if you look at all four slots there are two top slots and two bottom slots. My iMac RAM (ELPIDA) came with both inserted in the top slots. S I obviously inserted my OWC RAM in the two empty bottom slots. All four slots had 2GB of RAM so its was all symmetrical (2X2 on the top and 2X2 on the bottom). I realized the banks weren't listed correctly. So I JUST went in and put both my OWC RAM on the two right slots (top and bottom) and ELPIDA RAM on the two left slots (top and bottom). So with that this is what I have...are my banks correctly lined up now? I'm going to see if this fixes the problem Because what I'm reading in this thread and Apple's website I put them in wrong. But that had to do with different numbers of RAM mixing with each other...mine are all 2GB. Any help would be appreciated.