On my KT7A I could get away with running a 128 in the first slot and a 64 in the second. I tried the 256 in first, 128 second and also failed. I kinda miss that board, but I know the person who's got it now is really going to like it, so I feel good parting with it.
I think you'll have a pretty nice setup once you get it finished. It may not be the million dollar rig some others have, but a damn fine machine. You'll like it
