syuroffOK, I think I get it now, but let me check- Another way to say it is that of the 3 slots within a bank:
-Thou shalt not use only 1 slot (troubleshooting mode only)
-2 matching DIMMs are acceptable.
-3 matching DIMMs are also acceptable
And whatever you do within a bank, thou shalt replicate for the same bank on the other lane.
Yes?
Which boils down to if you want to add RAM, you're buying at either 4 DIMMs, or 6.
That sounds good to me.