Sources: AMD Has Created Navi FOR Sony’s PlayStation 5.

[Alby_da_Wolf]

Pemalite said:

Trumpstyle said:

Hi, sorry for late respond

What I meant with my previous post is you can have 8x 1,5gb ram sticks (or 4x 3gb ram sticks) for 256-bit buswidth for full bandwidth performance without any penalty. This can be used for 12GB of ram or even 24gb of ram with clamshell mode. This was not possible with GDDR5 and is not similiar to the 7950/7970 or 970 situation.

The point your missing is that 12 Gigabit chips aren't in the pipeline... They have been defined by JEDEC as a standard, that's pretty much it, they might not ever exist.
Samsung for instance -is- mass producing 16 Gigabit chips.

https://www.anandtech.com/show/12338/samsung-starts-mass-production-of-gddr6-memory

If something isn't being manufactured, then it's likely not going to be implemented in GPU's or Consoles, it's that simple.

Hynix for instance is going even lower capacity than Samsung for it's initial run and leveraging 8 Gigabit chips.
https://www.anandtech.com/show/12345/sk-hynix-lists-gddr6-memory-as-available-now

Now to convert Bit's into Bytes you divide by 8.
Thus...
12Gb/8 = 1.5GB.
16Gb/8 = 2GB.
8Gb/8 = 1GB.

Trumpstyle said:

So 12, 16 or 24 GB of ram is possible for next-gen consoles in a 256-bit buswidth.  I also recommend you don't read wccftech, fudzilla and tweaktown, they just make up stuff.

The Geforce 970 situation was well documented throughout the entire PC tech-sphere, so in this instance wccftech is reliable.
But hell. Here is Anand's take on the same issue.

https://www.anandtech.com/show/8935/geforce-gtx-970-correcting-the-specs-exploring-memory-allocation

BTW, 12Gb chips aren't even particularly useful or practical for ECC configurations, as these ones use typically 72bit to add ECC capabilities to a 64bit word, and that's simply achieved adding 8bit to those 64bit. Even thinking to use just one 12Gb chip to provide all the necessary bits one can easily see it's not the right size, as 72/64=9/8 ratio, while 12GB can't be divided exactly by 9 to assign 8 parts to data and one part to parity.