I bought two sticks of Kingston ValueRAM the other day for my dual channel motherboard. While I thought they were 2 sticks of 512mb, they appear to be 2 stick totalling 512mb. I don't know my about dual channel and RAM but they seems to be very expensive for what it is. I can get two stick of 512mb RAM in two separate packages for the price it cost me. Am I missing something? Did I get ripped off? BTW...I've tested them in single channel and they certainly don't appear to be 512.