Which is why you get a real ATX motherboard with 4 (or 6 for upper class Intel) slots rather than a little microATX board with no expansion capability.
Every microATX motherboard I've seen in the last couple of years has four RAM slots. Both AMD and Intel.
Imagine a computer with hardware that literally reforms its self to accomplish new tasks on the fly.
Reconfigurable computing is already possible with FPGAs. You can't go and buy commodity x86-type hardware such as CPUs or GPUs just yet, but "soon" (sooner than practical nuclear fusion, later than DNF) it will happen.
In seeking the unattainable, simplicity only gets in the way. -- Epigrams in Programming, ACM SIGPLAN Sept. 1982