Article is bogus for many reasons, could the 390x have 8GB or an 8GB version, very possible I've said as much for a long time. But could it happen how this article says, no, it's impossible, Faud is an idiot and anyone believing this has a basic lack of knowledge or logical thinking.
It's this simple, a card will take at least 12 months to make, newer architectures/bigger new cards generally take a lot longer with the derivatives (same architecture but different shader/rop/bus counts) being quicker but still taking a decent length of time to design, lay out, tape out and get to market, mostly concurrent work but it takes time regardless.
You can not, with absolute certainty, go 2-3 months from launch and double the memory bus size... this is a literal impossibility. The article is twaddle because it's proposing something that is literally impossible. You can't take a core designed for four external connections to memory chips and just add four more without redesigning the entire chip, relaying the chip out on a transistor by transistor basis, re-taping it out, etc. This would add die size and at minimum a 12 month delay for a huge cost. This is NOT possible.
What is possible is it was always going to be an 8GB chip with 8 memory connections, what is also possible is the wait till summer is because that is when 2GB stacks will be available, letting them offer 4/8GB versions both using 4 memory stacks, just different density stacks.
On a more sensible note, 6 stacks would cost a lot less than 8, give you 6GB at a lower cost to the user yet adding 50% more memory for 4k users which will be more than enough in 99% of games for the next few years.
There are many possible specs for the 390x, what is impossible is what Faud is pushing in this article, that because Nvidia has semi announced a 12GB card that AMD at the last second reworked the card to completely change it.
