And yet there have been plenty of motherboards on the PC side with more than 4 slots for single CPU machines. For a $2499 machine I expect more than what can be done "easily".
And why would intel design a chip with a memory controller that supports 4 dimms, but triple channel memory? Doesn't really make sense.
Thank you for pointing out the odd situation that Apple has 4 or 8 DIMM slots for a CPU that would natively support 6 or 12 slots. I omitted that detail....