this post was submitted on 19 Feb 2025
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cross-posted from: https://sh.itjust.works/post/33099518

TLDR: NVIDIA removed support for PhysX with the 50 series GPUs, resulting in worse performance with PhysX games than previous GPU generations

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[–] AdrianTheFrog@lemmy.world 12 points 4 months ago (4 children)

Are there really any 32-bit era games that your CPU can't handle, especially if you have a $1k+ gpu? This post is honestly pretty misleading as it implies modern versions of PhysX don't work, when they actually do.

That being said, it doesn't make all that much sense as a decision, doubles are rare in most GPU code anyways (as they are very slow), NVIDIA is just being lazy and doesn't want to write the drivers for that

Well, at least you aren't on mac where 32 bit things just don't launch at all... (I think they might be playable through wine, but even in the x86 era MacOS didn't natively run any 32 bit games or software, so games like Portal 2 or TF2 for example just didn't work even though they had a MacOS version)

[–] cheesorist@lemmy.world 19 points 4 months ago (2 children)

mirrors edge drops to under 10 fps when breaking glass which generates physx objects... with a 9800x3d.

the current physx cpu implementation is artificially shit, the cpu can easily handle it nowadays but it depends on skilled community members or nvidia themselves to unshit it.

[–] Evil_Shrubbery@lemm.ee 3 points 4 months ago* (last edited 4 months ago)

nVidia doesn't really have that many successful unshits, historically speaking, do they?

[–] AdrianTheFrog@lemmy.world 2 points 4 months ago

Hmm, I was not aware of that. I've seen (not Nvidia related) simulations with probably tens of thousands of rigidbodies running on relatively old midrange CPUs in real time, so it's pretty crazy that it's that slow.

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