PS5: Leaked Design And Technology [RUMOUR]

[KBG29]

EricHiggin said:

Lafiel said:

Yea, large monolithic chips hopefully can be replaced by clusters of chiplets in the future as that would mean much less wasted silicon waver area and should result in better prices. The problem is the bandwith of Infinity Fabric (IF), which afaik isn't quite high enough to seemlessly link several GPU chiplets into a big GPU. Even if AMD has a much more advanced IF rdy to go it could be prohibitively costly, as they don't seem to use it in their upcoming Navi GPUs (the one Lisa showed on stage at Computex was monlithic).

I was also thinking about AMD's GPU roadmap and how Navi was said to have next gen memory (GDDR6) and scalablility. While that could mean different things I wondered if it could potentially hint towards multiple GPU chiplets like the Ryzen CPU chiplets.

There are other rumors at the moment that Navi 10 is still partially GCN and partially RDNA, and that Navi 20 next year will apparently become fully RDNA. With AMD mentioning that PS came into the picture after Navi had been in development, maybe the reason for the hybrid GCN/RDNA was for them? Since PS can add future advancements to their planned past/present GPU architecture using AMD's semi custom branch, maybe it's possible that PS5 could use smaller multiple APU chiplets based on Navi 10 that incorporate a Navi 20 advanced IF chiplet design?

The advanced IF could cost more but likely shouldn't be more costly than fabricating an 8 core, 72 CU, monolithic APU, and it's losses due to yields. If it works for CPU and can have costs as low as they do, then surely it could work for GPU as well once the die get's large enough that yields are a problem. Could it work for smaller separate APU's though?

Did you see Apple at WWDC?

Radeon Pro Vega II Duo, two Radeon Vega II's connected via Infinity Fabric!

People have underestimated AMD so much, but the road maps have ben telling us this stuff is comming all along. I brought up Scalability meaning they were going to make a huge push towards Portable and Mobile devices with Zen and Navi, and now look at the Laptop space, and the deal Samsung just signed for their Mobile products. 

I believe more and more that PS5 is going to be a much more scalable platform than we saw with PS4 and PS4 Pro. I would not be surprised to see Sony take advantage of Infinity fabric for a future Premium tier PS5 revisions. Ryzen and RDNA are already perfect for a Mobile PS5, Sony has to have been thinking about this in the development of PS5, especially with the state of the console market in Japan. Don't be surprised if the rumors FoxyGameUK of a Portable PlayStation come to fruition. A stand alone PlayStation VR device like Oculus Quest running on Ryzen and RDNA is another real possability. A low power Ryzen/RDNA Mobile chip would be a perfect replacement for the garbage MediaTek SOC's in their Bravia TVs as well. 

Sony and AMD might finally be in position to achieve what Ken Kutaragi was aiming for with Cell and PlayStation. Exciting times lay ahead. Sony, Microsoft, and AMD are ready to rock the boat hard, and greatly realign the tech industry over the next decade.