Originally Posted by 8051
Is the Xbox System X system memory divided into separate buses so that 6 GiB is dedicated to the CPU and 10 GiB dedicated to the GPU? I mean divided in the sense that memory bandwidth is not shared between the GPU and CPU and the GPU and CPU can be reading/writing separately to the memory pools simultaneously.
Originally Posted by ILoveHighDPI
No, it's still unified memory but developers have the ability to choose what data goes to which memory pool.
This is very disconcerting. As more open world games become bandwidth dependent those same developer will have one of 2 options.
1. Spend more resources to back port it back to PC. Which might result in nearly all PC derivatives being slower then console.
2. They don't and move on to the next project.
The number one sandbox game that I'm very concerned with is the next Grand Theft Auto (Honorable Mentions: Saint Row, Assassin's Creed, Watch Dogs, Just Cause, Forza, etc)
Another aspect of FPS gaming that becomes a concern for PC gamers are those sandbox games that are on "rails". However, still look open world. But limits you to traverse in a certain direction. Barriers like Walls, mountains, hill sides, building, etc make it impossible to travel left/right, etc. Other tricks are having to go through a building were only certain doors are open while other doors, don't function. In other words those kind of maps give you the impression of sandbox environment but you aren't able to interact with every aspect of the sandbox environment.
With these memory constraints removed, among other constraints, the whole idea of sandbox games on "rails" become moot. They can simply be an actual sandbox game. With "arrow guides" pointing you in the direction you need to go when needed. And that isn't all, just the tip of the iceburg...you can have more NPCs doing different things: land, air and sea assets traversing the environment, etc. in ways not yet experienced.
We've already seen what the PS5 can do with storage and memory bandwidth with the map alleged to be the next Spiderman game. And the PS5 is alleged to be much slower then the next gen xbox.
Start at 0:32 to see the difference.
Now, if Spiderman, alleged game in development in this video, is brought to the PC will the game play experience be the same? IMHO, no.
Here is GTA V to show you what the developer's vision is when it comes to memory bandwidth:
Don't get me wrong. With DDR5 it should blow these results out the water. But what will you expect the performance to be when bench marked using next gen consoles?