Originally Posted by JoshHuman
It's the green vs. black pcb problem. The black ones oc great while the green ones can't handle it.
Edit: this is regarding the 4x2GB GSkill cas 7 1333 ram.
That is what some say but I am not completely sure about that 1 of mine has the black #1 and #2 has the green #2 clock for clock out preforms #1 and #1 so far will OC higher but not much 1 or 2 mhz both will boot and run at 240 but neither is 100% stable at that, they are both stable to run SMP at that but #2 with the green PCB's will out preform #1 neither will complete a bigadv at that. Both will complete a bigadv at 235 but once again #2 out preforms #1 so I myself have doubts about the green black thing. I think there may be some issues with something but what it is I have not figured it out yet and it will probably take a while to figure it out. There is allot of testing that has to be done first but I do not think there is a difference in the green and black at least not with the current bios.