So when I got my S939 mobo, all I had was my 1 gig of UNMATCHED ram. (2.5-3-3-8 and 3-3-3-8) and they auto-set to 2T. Well, I found the hidden features in my bios by pressing CTRL and F1 and BOOM, hidden features. That let me adjust my settings further. There was a setting to first adjust the command rate but I didn't want to kill my ram. Well, its getting closer to X-mas so I dedited, "Why not" and sure enough, IT LIVES!!! Ran memtest86 off my xubuntu cd for 18 hours straight. It passed with flying colors and damn I feel happy. Sorry if this is typical but I don't think it is!