And why would the tdp increase so significantly when the chips get smaller and more efficient. GPU TDP has been stagnant, it's been around ~250 watt for the last 5-6 years for high end cards.

Here are two articles that explain nicely what is industry currently dealing with when it comes to sub-28nm proccess.

http://electroiq.com/blog/2014/03/moores-law-has-stopped-at-28nm/
http://www.pcper.com/reviews/Editorial/Next-Gen-Graphics-and-Process-Migration-20-nm-and-Beyond

As I said earlier, I would expect to see 15TFLOPS GPU around 2018 for the similar price as what's inside PS4 right now, but I'm sceptical if they don't manage to switch to something new in time.

As for RAM, I remember a lot of naysayers on this very forum (always found that funny) saying how 8GB is insane and way too much for next-gen consoles before PS4 and XOne were revealed. While it is too early to predict what is going to be normal in 2018-19, 64GB really does not seem too much, IMO.

I think PS5 will be roughly 10 times more powerful than PS4, 32-64GB total system Ram.   2k resolution for Games, 4k for Movies.  Can't say that much, too early.

I did my homework, but did you? Cloud gaming with next-next gen graphics is not gonna be a thing within the next decade, too many people that dont have the necessary connection, maybe most of Europe and America will have the necessary  connection sometime in 2020s but Playstation is a global brand that serves millions of people without the best connections, they will never introduce a PS5  that will be limited to only a handful of elites in the West.

Whats the huge change thats coming to gpus in 2016? And why would the tdp increase so significantly when the chips get smaller and more efficient. GPU TDP has been stagnant, it's been around ~250 watt for the last 5-6 years for high end cards.

The RAM volume seems fine to me, why would you need 3GB for the OS right now when 50MB was more than enough for last gen consoles? These kind of questions are silly to me, new technology, unforeseen  features and latest shit always get added no matter how hard you try to predict the future telling yourself that a fixed amount will be enough one day. It will not, never.

4K will become mainstream just like 480p, 720 and 1080p became mainstream. With enough time, the next technology will always become the standard. I can't believe there are actually people arguing that technology will stop evolving LOL.

You dont need 60" TV to enjoy 4K, 50" is more than enough to see the benefits, and the average TV screen size has been evolving to +50" the past decade despite our small homes. 4K has already started going mainstream, it is appearing on more monitors and tv's, not sure why you're arguing against technological advancement.

Check the role out globally of new consoles. This ties in with cloud gaming. Places with poor internet have just had the ps3 released at a huge price. They will not see the PS4 on sale until 2018+ and then cloud gaming until ~2021+, ergo working out very well for a staggered release of cloud gaming. The cloud gaming already being provided by the PS4 is clealry a test bed for this tech.

Consoles only consume 100 watts total meaning the performance difference between low to high end cards is becoming larger. The change in 2016 is the introduction (or so Nvidia hope) of complelety new architecture of the chip and port. This will (or so they hope) massively change performance and power consumption but again, cause a larger rift between high end and low end cards. It also will get to the point that it will not be economically viable or pratical to have these cards in a console as games have been lagging behind hardware for sometime. It would make far more sense to have a handful of hyper expensive cards run across a few dozen consoles.

No OS will get larger. There is no need for it. The issue with current CONSOLE OSs are the fancy extensions (vioce commands) and original dev kits shipping with too little memory. You have to remember that devs only found out about the full memory specs of the ps4 at the public press conference. hence why 4.5GB is dedicated memory, and more is flexible, but with current addressing issues. But as for memory and OS, windows, Linux, and iOS have no issue with ~1GB so why should the consoles stuggle?

You don't understand 4k do you? It is like 3D - redundant for 99% of people. Anything more than 1080p for 46 inch or less in a normal room is literally impossible to notice. Bluray doesn't do 4k. So why will 4k take off again? Also 50 inch is not average - where did you pull that figure from? That certainly is not the case in the UK as most people wpuld struggle to find 50 inches of wall space.

Check the role out globally of new consoles. This ties in with cloud gaming. Places with poor internet have just had the ps3 released at a huge price. They will not see the PS4 on sale until 2018+ and then cloud gaming until ~2021+, ergo working out very well for a staggered release of cloud gaming. The cloud gaming already being provided by the PS4 is clealry a test bed for this tech.

Consoles only consume 100 watts total meaning the performance difference between low to high end cards is becoming larger. The change in 2016 is the introduction (or so Nvidia hope) of complelety new architecture of the chip and port. This will (or so they hope) massively change performance and power consumption but again, cause a larger rift between high end and low end cards. It also will get to the point that it will not be economically viable or pratical to have these cards in a console as games have been lagging behind hardware for sometime. It would make far more sense to have a handful of hyper expensive cards run across a few dozen consoles.

No OS will get larger. There is no need for it. The issue with current CONSOLE OSs are the fancy extensions (vioce commands) and original dev kits shipping with too little memory. You have to remember that devs only found out about the full memory specs of the ps4 at the public press conference. hence why 4.5GB is dedicated memory, and more is flexible, but with current addressing issues. But as for memory and OS, windows, Linux, and iOS have no issue with ~1GB so why should the consoles stuggle?

You don't understand 4k do you? It is like 3D - redundant for 99% of people. Anything more than 1080p for 46 inch or less in a normal room is literally impossible to notice. Bluray doesn't do 4k. So why will 4k take off again? Also 50 inch is not average - where did you pull that figure from? That certainly is not the case in the UK as most people wpuld struggle to find 50 inches of wall space.

Why only 2K? We already can do 4K at 30fps with ~4tflops, can we?

PS5 with at least 10-15tflops (and better technology) will obviously target 4K (and easily IMO) for gaming and movies, exactly like PS4 targeted 1080p for games and succeeded, we still have only one game sub-1080p, an unoptimized launch game at 900p and at 60fps).

I really hope that Microsoft understand that and really try to release a 4K hardware this time. The problem with XB1 is not really the Tflops but more the inefficiency of the API (directs X is the culprit), the bad memory architecture (just see what Sucker punch can do with a ~100MB fast video framebuffer with Infamous SS) and number or ROPS.

What they could add this time is a hybrid SSD hard drive to improve IO access.

Teraflops aren't important.
Compare the Radeon 5870 against the 6970, the 6970 has a slightly lower TFLOP number, but the 6970 is easily faster, both despite having more flops than a 7870, looses to the 7870, see the trend here?

You need SERIOUS horsepower to render games at 4k and beyond, my old three Radeon 7970's in crossfire struggled in many games at max graphics at 7680x1440, that's roughly 20% more pixels than 4k.
Now I have Quad-Radeon 290's and it's no longer an issue, not because of the "Flops" but because of the video memory amount and bandwidth, an extra card helps a ton too.

This level of performance is not going to be mainstream performance anytime soon.
The GPU upgrade cycle has also slowed down in recent years, no longer are we seeing giant leaps and bounds every year, it's shifted over to bi-yearly.

You would more than likely be looking at a QHD standard for the next consoles, that's 2560x1440, which is a resolution that's gaining momentum across mobile and the PC industry.