Asus GL702VS. Got it for 1.175 € on sale. Granted, that's way more than you pay for a console. But we're talking about 2020 and a machine that is supposed to last until 2025 at the very least.

Probably 16GB, it has to fit in a €400 plastic box, the Xone released last year for €500 with 12GB of RAM.

8 gb of ram runs perfect for almost anyway, even gaming. There is absolutely no need for 128 gb of ram. My desktop has 24-32 gb (I can't remember) and is amazing with the dozens of browsers and programs I have opened at the same time.

20 GB total.

12 GB gddr5 exclusive games.

4 GB gddr5 shared OS/Games.

4 GB ddr4 for OS.

16GB seems about right

I want that 32.

Probably between 16-24 GB of ram, right now I'm guessing 16 GB of Gddr6 ram would cost Sony 120$. And doing a build for ps5 we can get a good idea.

100$ for Ram
100$ for APU (Cpu+Gpu)
50$ for hard drive
150$ rest

So you can see 16 GB of ram is already over budget but prices are expected to drop somewhat next year.

Probably 32GB shared memory, I can't really see why any game or gaming system in the next 8 years would need 128gb of memory. The OS will still need about 3/4GB, and lets say 8GB for background tasks, 24GB for games is way more than enough.

GPU/CPU is probably more interesting, I think it'll be about 1080 equivalent for a 2020 release, with about a Ryzen 7 2700 equivalent cpu.

16GB. Technically, you only need 8GB of RAM (+4GB VRAM) to play any modern game on a PC, and that's with the resource heavy OS. 4k res (+ some AA) would require a bit more than 4GB of VRAM, therefore they're most likely throw another 4 gigs on the top of it.

16 is more than enough.