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JRPGfan on 14 June 2020
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kirby007 said:
Pemalite said:

Think of Ram as a water tank... And the CPU and GPU as the taps, by constantly running the taps, you lower the tanks water level... So in order to top of up the water tank you need to fill up with more water from the storage drive... An SSD will add water faster than a mechanical HDD.

In short for every second of screen time, the Playstation 4 is able to render up-to 5.5GB of data, because that is how large it's Ram pool is... But over 30 seconds the mechanical hard drive can extend that by an additional 3Gb of data by streaming in assets.

Hope that has cleared it up.

Everyone clinging to certain advertising buzzwords is how the confusion has set in... But it's nice to know every generation we have a group of people who become CPU/Ram/SSD experts over-night, so that's great.

2 things :

how does this relate towards different framerates so a game running 30 fps or 60 fps or even 120 fps?

Does loading 16GB/s into the ram leave room for other tasks?

It doesnt relate to framerates.
It relates to how much details textures can be on screen.

That was why the UE5 demo was impressive.
It showed hollywood movie quality assets, of scanned objects loaded, as 8k textures used on a massive scale.


"Does loading 16GB/s into the ram leave room for other tasks?"
Neither the Xbox SX or the PS5 will fully use that for games.
Nor is loading things into ram pool a static thing, esp now with the SSDs.

Thats the entire logic behinde the claims that the PS5 SSD is so fast, you dont need to keep nearly as much things loaded in the ram anymore.
You can simply load anything on the fly, when needed so fast, it can basically happend as your character is turning around (ei. things out of view, can be loaded in and out of memory, as you move the camra view of your character around).

Basically Ram pool size is more than doubled, and smart techniques and the speed of the SSD IO, will enable you to use ram much more effeciently than before. So even if in actual terms its only perphaps "twice" as much (8gb->16gb) to developers, it will feel like its alot more than that.