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

[Pemalite]

Trumpstyle said:

Duuude you can do 12GB or 24GB of ram on 256-bit memory bus, this is possible on GDDR6 but not GDDR5.

1) I never said it was impossible.
2) You will need 2x memory chips on a single memory channel, which means performance/bandwidth is degraded when memory transactions are performed on that memory location.
3) It is in-fact possible regardless of memory technology.

In-fact nVidia did such a thing as recently as the Geforce GTX 970.
See here:
https://wccftech.com/nvidia-geforce-gtx-970-memory-issue-fully-explained/

And AMD took a path similar to that where they decoupled the rops and had two on a single crossbar, this brought with it some caveats.
See here:
https://www.anandtech.com/show/5261/amd-radeon-hd-7970-review/4

Trumpstyle said:

Since you usually ask for source for some random reason (you should find a source not me), this what I found

The burden of proof always lays with the person who makes the claim.

The reason why I typically don't cite all my claims is because... After all these years, should I really have to? I think I have established that I know exactly what I am talking about.
With that in mind, if you ask me to provide evidence, you bet your ass I can and I will, but keep in mind... Once you ask me for evidence, I will rip your future posts apart if they lack evidence.

Trumpstyle said:

"GDDR6 breaks with that tradition and offers in-between options. The standard allows a capacity of 8 to 32 Gbit, but 12 Gb and 24 Gb are possible as well. This will probably make GPU makers happy since it will increase the ability to segment the market based on the amount of memory."

"Today, a GPU with a 256-bit bus can only cleanly support 4GB, 8GB or 16GB. With GDDR6, they will also be able to support 12GB, while still maintaining a full balanced load with identical sized memories connected to each controller."

Each memory chip has it's own bus to the memory controller.
For example... On the Xbox One it has 16x memory chips, each chip has a 16-bit path to the memory controller for a total of 256-bit.
Remember, memory transactions are a parallel task.

https://www.chipworks.com/ja/node/123

The exact same principle applies to all other memory technologies, be it NAND, RDRAM, DDR Ram, GDDR Ram, HBM.

Now the reason why that 12GB capacities might be possible on a 256bit bus with GDDR6 is simple. They will have 3Gb chips. - They don't currently exist yet however, they might never exist.
Not everything that is defined by JEDEC actually reaches the market.
And initially it will be 2-4Gb chips that hit the market, which is what GPU's will likely leverage anyway, because advertising. (There is a reason why 4GB low-end GPU's exist, even if they can't use it all effectively!)
https://www.amd.com/en/products/graphics/radeon-530

CGI-Quality said:

shikamaru317 said:

I don't expect the GPU or RAM in next-gen consoles to monstrously exceed the CPU personally. The GPU upgrade is looking like it might only be 2x XB1 X. The Zen CPU meanwhile will probably be like 3-4x better than the overclocked 8 core Jaguar in XB1 X, even if it is a 6 core Zen CPU. Zen has hyperthreading (or AMD's version of it), so even with a 6 core Zen we'll have 12 threads compared to 8 on Jaguar. Sure hyper threading isn't as good as having actual physical cores, but I'd reckon that hyperthreading will make up for Zen having 2 less cores than Jaguar. Plus we'll get a huge increase in IPC, and hopefully MS and Sony aim for at least 2.4ghz frequency wise on Zen. 

2400MHz is measly. 3.0 or, as Pema would say, GTFO. These things don't need to be gimped anymore, and I promise you, even 2x the power of current console GPUs (Pro/X) will be an issue for an under-clocked/specked CPU. Forget 4K/60 if that's all they can muster. 

Not to mention there is absolutely 0 reason to have Zen at 2.4ghz. Zen has shown to be extremely efficient at 3Ghz+ clockspeeds, I would imagine at 7nm it would be even more so.
Plus, single threaded performance is a must if they aren't going to take the core counts wide.

As for Hyperthreading, there is caveats to that. - I would be fine if they didn't bother with it for the consoles.