Yes. Of course. Intel should throw away its stockpile of chips rather than sell them. That makes perfect sense. 4x4 will bomb. He forgets to mention you have to buy RAM for each processor. So if you want two gigs of system RAM you have to buy 4 gigs of RAM.
Where did you get that from?
That would mean that the RAM of one processor is mirroring the RAM of the other.. and they'd have to constantly resynch etc.
I'm pretty sure the way it works is that, if one processor wants to access the RAM of the other processor, it goes through the HT link.
Concerning DaSickNinja's post, where do you get this 6-8 memory sticks thing?
DIMM slots are already 64 bit, and to get dual channel, you need 2 of them per CPU, hence, 4 memory sticks overall.