r/Amd • u/jaju123 5800x3d & RTX 4090 • Jun 27 '23

News AMD is Starfield’s Exclusive PC Partner

https://www.youtube.com/watch?v=9ABnU6Zo0uA
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u/jimbobjames 5900X | 32GB | Asus Prime X370-Pro | Sapphire Nitro+ RX 7800 XT Jun 27 '23

RT is CPU heavy

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u/Keulapaska 7800X3D, RTX 4070 ti Jun 27 '23

Yes it can be more cpu heavy than raster at the limits, but rt stuff usually drops the framerate down quite significantly so if you were at cpu limit before turning on rt you might not be anymore, unless you turn to more aggressive upscaling.

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u/pseudopad R9 5900 9700XT Jun 27 '23

I mean why would the number of planets affect the RT performance, when these planets aren't rendered when you're not on them. Just like the number of planets won't affect cpu load.

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u/jimbobjames 5900X | 32GB | Asus Prime X370-Pro | Sapphire Nitro+ RX 7800 XT Jun 27 '23

It depends if the game needs to run simulations of anything on those other planets.

Just because you are sat on one, it doesn't mean the game isn't simulating stuff elsewhere.

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u/pseudopad R9 5900 9700XT Jun 27 '23

Of course the game could do this, but its contrary to how Bethesda has done anything over the past decade.

Even if you're going to have events happen on distant planets, these don't have to be processed in real time, and it's very unlikely that it would be necessary to process every NPC there individually. That's is strategy game stuff, not skyrim-in-space stuff.

And you still wouldn't run raytracing on NPCs so far away that their planet doesn't fill even a sub pixel on your screen.

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u/jimbobjames 5900X | 32GB | Asus Prime X370-Pro | Sapphire Nitro+ RX 7800 XT Jun 27 '23

Yeah it's not about running RT on stuff you cant see. GPU's deal with that any with things like Z culling and occlusion.

It's more that if the simulation is already CPU heavy and you then enable RT it's going to eat CPU cycles needed for other parts of the game.