I think all of this will probably be wrong. The ps5 might work on a completely different architecture that the ps4. I'm feeling that it might have less ram than what you said and more raw power.

Yeah, no point talking about specs right now...

8 GB isn't that uncommon, even on notebooks. I have 16 GB on my PC and it was damn cheap. Consoles have 8 GB. RAM increases all the time because it is relatively cheap. Here is an example:

http://www.laptopmag.com/review/laptops/best-notebooks-of-the-year-2009.aspx?pid=11

This is the LaptopMag gaming notebook of the year for 2009. It had 6GB of RAM. Here is their current best:

http://www.laptopmag.com/reviews/laptops/alienware-18.aspx

Rocking 32 GB. More than 5X more RAM. 

The console market won't jump past the PC one, but right now you have PCs with 16 or 32 GB, already more than a PS4/One. In five years it won't be hard to see rigs rocking 64 or 128 GB, maybe more. It's Moore's Law that dictates how much it will increase. In 6 years, for the same price you get 32 GB today, you will be able to buy 256 GB, so we can conclude that PS5 could easily get 64 GB for the same cost as 8 GB today. Remebering that the current PS4 memory architecture is not costly effective since they have to use 16 X 512MB memories.

I'm sure you bought that 16 GB (or probably built your own computer).  I was talking about the average PC coming with 6-8GB.  My PC came with 8 and is upgradeable to 16.  I'm thinking 16-32 GB range is more reasonable than 64+.  Right now I'm seeing 16GB costing around $120-150.  Sure prices drop over time but it seems that anything past 32GB is just overkill for the next generation.

While I agree that the number might be a bit high, it's really not an outlandish claim. In 2007, a good gaming PC would have 2gb ram. Today, most have 8 and many 16 suggesting might be a better number. If you do the calculations on that, the amount of ram an average computer has could land anywhere from 32 to 64gb in the next 6 years. 

Average PCs don't come with an AMD 7870 GPU, it's not a very good baseline. 16 GB would be only double. Right now, we have the Titan Z coming with 8 GB of video memory. PS5 will have to up his game. Besides that, remember that consoles usually come with unified memory, so it has to be more than a PC that have its RAM and GPU memory. A good gaming PC today will have 8-16 GB of RAM plus at least 2 GB in the GPU, while dedicated rigs will be way above. Besides that, RAM rarely is an overkill, more is better in that case.

That's my point. RAM increases quite fast. The amount of RAM you said a gaming PC had in 2007 (2 GB) isn't common today even on low cost netbooks. High end smartphones today have 2 or 3 GB and the new 64 bit mobile processor show that they are planning to jump beyond the 4 GB barrier. It would be pathetic to see a PS5 coming with 16 GB of RAM with phones rocking 8 GB.

It really is too early.  We are at the cusp of a lot of technological breakthroughs...

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.

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.