but thats what i am saying these are matched pairs with the only difference being size... they are same speed same clocks same brand everything is the same they are ment to be ran together
Same Size is not meant to be run together.
Does not matter if it is the same manufacturer, same speed, same settings.
You can not run two different Sizes together like you described in your original thread.
Therefore, your pairs are not properly matched.
I have two sets of OCZ Reaper Memory. One is PC-8500, one is PC-6400.
My set of PC-8500 will NOT run with the PC-6400 while both are set to 800mhz.
I take either set out, and leave the other in, and they run fine.
Try removing your mismatched pair one more time but reset all your bios DRAM settings to their default/auto settings.