Interesting link zarx and thanks for the minor slap at the OP.
I would point out that initial configuration in the item you quoted essentially matches the OP. It also been noted in this thread before (this was many many months ago) that there were rumors MS was switching from Intel to full AMD like Sony's rumors. At the time it was only one rumor, but this correlates that with more specifics.
I'll have to search a bit to see if this is gaining traction before I go through the trouble of updating the OP and 2nd post.
I do note that this would have a very high heat and cost for a console. I personally doubt this is legitimate for those reasons alone, but I will look to see where else this is being reported or discussed and go from there.
As always, thank you for the tip.