Yep.  Cerny already made a step forward with PS4 PRO, so it sounds natural they will continue with that on PS5.   From the "leak" : Memory: 24GB - 20GB GDDR6 at 880Gb/s - 4GB DDR4 reserved for OS; is this kind of solution too costy ?  If you ask me, 20GB GDDR6 at 880Gb/s would be fantastic for gaming, and considering the life cycle has been lengthened lately.   Could be feasible ?  

I must say I'm a bit puzzled with that 880GB/s - it seems as if someone took 11Gbps GDDR5X with 640-bit bus width and came to that number.

EDIT: There's another possibility - Micron demonstrated back in June that 16Gbps GDDR6 can be pushed to 20Gbps with slight voltage overclock. So 11x 2GB modules on 352-bit bus would give 880GB/s...but that sounds even more out there.

Why can't Microsoft leverage Navi as well?

I think a good ballpark is 3-4GB for the OS next gen, there really isn't an appropriate reason why that should blow out... Except for a push for 4k, but I think better memory caching is the answer for that.

Precisely. As time goes on... 24GB seems to be the upper limit that I am willing to bet on.
It would mean a 384-bit memory bus though, so probably not the ideal configuration for a base-console that is supposed to hit $200 price points late in it's life.

24GB on a 384bit memory with 16Gbps chips is probably around the 768GB/s of bandwidth mark.
16GB on a 256bit bus will hit the 512GB/s mark... Which isn't actually a bad amount for 4k gaming.

But I wouldn't be surprised if it's lower than even that... Not even RTX is using 16Gbps chips yet AFAIK... No way is 880GB/s happening with GDDR6 right now though.

I think bandwidth will remain conservative... And a higher emphasis on GPU efficiency to extract more out of it... Ironically, Vega has a ton of features that aren't functional that would have helped on the bandwidth front too... So I expect them to be working with Navi and newer architectures.

It was just working with a what if scenario. As I said, it's under the assumption that the previous leaks about Navi being designed as a PS5 chip were true. I feel it would follow the same roadmap as when AMD made the RX pro for Apple. Sure other polaris mobile chips were sold to other OEMs based on that design, but Apple got it first.

I'm not trying to say it's definite, i'm just saying that according to that information, and based on the closeness Sony were rumored to be working with AMD, even though Sony wouldn't have exclusive rights to Navi in a console, It would probably mean it would be exclusive until it ships. That reality would be disaster for MS, because they'd essentially have to wait for PS5 to launch, just to start ordering the final design.

So, my assumption was If all of that was true, I would think MS would use an already available Vega and launch sooner.

An SSD will make the OS faster and more responsive, load times in games will improve. But the main point with a SSD is to allow game developers create new gaming experiences which would otherwise not be possible with a slow mechanical drive.

About the price for NVMe or SSD drive, right now on newegg a 2TB laptop mechanical drive is 85$ (they will not go for desktop mechanical drive because of heat, vibrations and future slim version), a 1TB SSD is 103$ (cheapest one) and 1TB NVMe drive is 135$ (intel 660p). As you can see the prices are pretty close, but flash storage is predicted to fall between 20-50% this year. And so I believe 1TB flash storage will be cheaper than 2TB mechanical drive by end of this year. But if the price is to high for 1TB flash storage Microsoft and Sony will sacrifice Vram to make it affordable which I have in my speculation.

Now we have good folks here at Vgchartz, resetera and beyond3D almost everyone think next-gen will have 2TB mechanical drive, and some think it will come with some flash storage. But the simple fact is a 12GB Vram + Flash storage will obliterate a 16GB Vram + mechanical drive setup and with Amd:s High-bandwidth cache technology it will 3x obliterate the mechanical setup.

The reason for this is with Flash storage you get better usage from the Vram then a slow storage solution with high Vram as you always need to buffer a lot of asset ahead of time and this will just get worse in next-gen if we go mechanical drive again.

So we can pretty much be 100% certain next-gen will go with 1TB flash storage.

Dude this is what pretty much everyone is predicting :) but I think is just to optimistic if Microsoft and Sony goes for this kind of setup.

I would slightly lower the clock speed for the Cpus, remove the LPDDR ram and lower the TF numbers. I think this would be more reasonable. And if Sony and Microsoft goes for a hybrid storage solution I expect it to be 1TB mechanical drive + 64-124 GB of flash storage. I just don't see any reason to go for 240 GB flash storage unless for high speed.

Also I don't think we can expect Sony or Microsoft to take heavy losses on the next-gen consoles, moores law is simply dead, hardware components just don't fall in price as it used to. It's just to risky to take big losses out of the gate as they risk enduring those losses for a very long time.

Yep.  I was looking at some info about PRO more efficient GPU/architecture : ""The original PS4 didn’t exactly ship with a surfeit of bandwidth, at 186 GB/S, and the PS4 Pro only features a modest bump in bandwidth to 218 GB/S, which is pedestrian compared to cards like the 390X—at 384 GB/S—targeting higher resolutions.

What’s the solution here? As always, the Polaris answer is “more for less.” The next-generation delta colour compression tech onboard the PS4 Pro’s GPU is 30 percent more efficient colour compression on the 290X/390X. Colour compression reduces the size of the framebuffer, thereby reducing actual memory bandwidth needs. With 30 percent more efficient colour compression, the Pro’s GPU has an effective bandwidth of 283 GB/S as compared to the 390X. Because the Pro doesn’t offer that much bandwidth as is, color compression and reduced bandwidth requirements will enable it to hit playable framerates at higher resolutions—which is the whole point of the Pro in the first place.""

  Basicly it's not only a matter of raw power and numbers, but "balance and efficiency", and I'm confident Sony and AMD will pull out an amazing piece of hardware.  

 That said, I believe Sony will push a bit more the hardware boundaries this time around, and they won't play the really "cheapest and safest" way like they did with PS4. 

  I think most of us will be amazed by the PS5 capabilities.  

Well, they didn't really play cheapest and safest way with PS4 - only thing that was cheap was Jaguar, 8GB GDDR5 came as a surprise to many, even Mark Rein from Epic was surprised after reaveal (or acted quite surprised in one of aftershow interviews)...slightly cut down 7870/7970m class GPU was also better than what many expected, they could've gone with something similar to XONe's GPU and still have slightly better performing console due to GDDR5 and/or higher clock.

20GB GDDR6 at 880GB/s isn't feasible to me. That would mean they are pushing the individual chips to 20Gbs. Which doesn't just sound complicated but as doesn't sound stable. Highest I see them going is with 16Gbs chips. Another thing is the cost of making a PCB with a 320bit bus. 

I mean they could do 20GB on a 320bit bus with 16Gbs chips and get 640GB/s and honestly I see that as the highest they would go. As for the OS Ram... anyway we spin it x amount DDR3/DDR4 will always cost less than the same x amount of GDDR6 RAM. So adding 4GB of DDR3/DDR4 will cost less than having 4GB more of GDDR6. And LPDDR4 is even cheaper, its bandwidth peaks at around 32GB/s which is mre than enough to run a OS and OS based apps like netflix, youtube, browsers.....etc. 

124GB flash storage may not be enough especially when considering games are going t be touching 80GB - 100GB+ in size next gen. And in truth 240GB flash will cost them less than $10. While a 2TB HDD will cost them around $25. So total storage budget will be around $35. Which is about $10 -$12 more than it was back in 2013 for a 500GB HDD for them. 

Also at least 240GB flash is necessary if you really want to have a smooth and snappy operating console (which is the whole pint of putting one in to begin with). The OS will be permanently in the SSD, as would as will integral large portions of the last 2 - 3 games you played. Spending $35 for a solution like this is better than spending $40-$50 on a 1TB SSD. 

As fr the LPDDR4, sony is already doing this with the PS4pro. The PS4pro has  separate 1GB DDR3 Ram exclusive for the OS. And that what in 2016. Thats a clear indication that its something sony could go with. Especially if using that solution frees up the more expensive and faster RAM for whats really important. Its also a solutin I expect MS to adopt too.

Oh I expect they will take losses. Of at least $40 to $100 on each console sold. And I wont  call that "heavy losses" But you are right about the hardware prices not dropping as much as they used to. The only real way to save costs on hardware is whenever there is a node shrink and that has far reaching benefits on the entire cost of the system. S its very possible that whatever loss they are taking on hardware they will be taking it for around 2yrs+. A $40 loss per console wouldn't kill them though

Ok my buddies, take it as a grain of salt; these are the latest leaks from a small EU third party developer.

""I'm a third party small developer from EU,for the last 8 months i've been helping a well known company in a AAA game development that is set to release in 2020 as a lunch game for PS5.

Some infos that i'd like to share that are 99% correct(I say 99% because small incremental hardware change can occur till 2020, although specs are set in stone).

-PS5 official info from Sony somewhere around next E3(Sony will not be participating on E3),i'd say Q2 2019 small reveal

-PS5 release March 2020 or November 2020,not yet finalized

-backward compatible

-physical games & ps store

-ps plus & ps plus premium ( premium-beta early access,create private servers,

-specs CPU 7nm ryzen 8 core 16 threads,unknown speed
GPU 7nm Navi arhitecture around 14TF,its gonna be powerful and power efficient,Sony working with Amd for Navi,some sort of Ray Tracing but will not focus on that,more focus with VR and 4k,much better bandwith overall

24GB Gddr6 + 4gb ddr4 for os, we have 32 gb dev kits
-2tb hdd some sort of nand flash
-8k upscaling

-PSVR2 in 2020 also,reveal with ps5,big resolution boost probably 2560x1440,120hz,220 field of view,eye tracking,wireless,battery life 4-5 hours,headphones integrated,less motion sickenss,no breaker box,much less cable management,much more focus on VR for aaa games,price around 250$

-dualshock 5,some sort of camera inside for VR,more analog precision for fps games,something similiar to steam analog trackpad

.........""

https://pastebin.com/PY9vaTsR

Something funny that I just thought of.  Will they finally make it so you can turn the lightbar off or will this camera he mentions be a replacement for a light bar and better for VR?  Also I hope PSVR games are BC (which it sounds from this like they would be) because keeping two big VR setups around is a lot more inconvenient than a console though I would probably sell my first gen PSVR