So, this is 2 dies in 1 package, with no new connectivitiy between the dies? This is equivilent to 2 sockets into 1 socket, with all the problems that comes with 2 sockets still being there.
Intel has done this EXACT move in the past. The pentium D had 2 dies in 1 package that functioned exactly the same as it would have in 2 sockets. And this move was in response to AMD releasing the athlon 64 x2, which was the first consumer dual core processor. Since intel didnt have a dual core yet, their answer was 2 sockets in 1, and all the problems that came with that.
Rather intersting to see history repeating itself. Not exactly the same situation, but there are a lot of parallels.
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Note AMD's threadripper and epyc archs are also a 2-4 sockets in one approach. However, if the rumors about the 7nm versions are true, then it will be a much tighter integration, to the point its more akin to a single processor in a single socket then multiple. Cant wait to see what AMD has done on 7nm. Not that ill ever buy an EPYC chip(nor a xeon)...i have no use for big iron, but i want to see what they have.