Ok i havent been able to get my memory to run in dual channel mode or put another 512 stick of ram in. i was told it may just be bios issues so i never toyed with it much. But today i updated my bios and triedto switch my ram around. Tried to put it in dual channel and nothing. So i just put both in the other set of slots then they were originally in. Come to find out they wouldnt even work in there at all. So would this have to do with one of those slots being out on my mobo? got it from newegg.com so would be able to send it back. just wanted to kno if there was a sure way to check this so i dont send it back get a new one and have the same problem thanks.