Ok, so I have been running my p5n-e sli for over a month now with 2x1gb sticks of g skill RAM. Well since RAM is so cheap atm, i decided i want 4 gigs of ram. Adding another 2 sticks of this g skill RAM doesn't work on this motherboard. So I decided to by a pair 2x2gb OCZ RAM I saw on sale. Well it worked fine for a couple days but not freezes in windows. I tried reinstalling my old RAM and the computer runs fine with it. But with the OCZ ram, windows freezes after a couple minutes, and if I try to reboot i get a long beep, which tech support told me meant there is a voltage issue. They said it was either my mobo or PSU. But I don't understand why my old RAM works if there is a voltage issue, but the new stuff doesn't. Do you guys think the RAM is bad, or that the board is bad? Feel free to express any other opinions. Thanks.