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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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GPU Passthrough Advice (self.linux)

submitted 1 year ago by p5f20w18k to c/[email protected]

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I’d post this in a hackintosh community, but there’s only 1 that I could find, with 1 user so I don’t think I’ll get much of an answer.

I’m looking at buying a 8GB RX570 to use for a Mac VM, my current 3070 isn’t an option, cause Apple.

Catch is, I use a 3440x1440 monitor, which runs at 180Hz. Would the 570 handle that res and refresh rate? I don’t plan to do much gaming, I have my host OS and a Windows VM for that.

I’m just looking for a smooth experience for basic browsing and video playback on YouTube.

I haven’t had an AMD card since the HD 7970 (I think) so I don’t know how well they perform these days.

If there’s a place for hackintosh discussions on Lemmy, let me know, I couldn’t find it.

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[–] kwozyman 4 points 1 year ago (1 children)

I'm assuming you're running a Linux hypervisor with kvm and just the vm is Apple.

I can't attest to the performance of the GPU, but you will encounter a different problem -- the "AMD reset bug". You will not be able to reboot the VM without rebooting the host as the GPU doesn't know how to properly reset itself and will go in a unrecoverable state upon VM reboot. There is a kernel module called vendor-reset that mostly fixes the issue, but I'm not 100% sure it still works on newer kernels (it also contains a much better explanation of the issue and has a table with the affected hardware).

tl;dr If you're buying a new board, I would avoid this specific model.

[–] p5f20w18k 3 points 1 year ago

Thanks for the input, I’ll look more into this before buying any new hardware.

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago)

According to GPU Check, the RX570 was able to run games at 1080p and 144 Hz on a 24" ViewSonic XG240R gaming monitor. While not 180Hz, it's comparable. The RX570 has recommended resolutions of 1920x1080, 2560x1440, or 3840x2160 as well. It seems like it's a solid choice based on your needs and isn't insanely expensive either.

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (1 children)

Please consider that KVM could possibly be a limiting factor for such high frequencies.

I don't know, but just guessing.

[–] p5f20w18k 2 points 1 year ago (1 children)

So far, running windows in KVM does 180Hz no problem with a 3070, if I have to bring it down to 144 its not a problem.

Right now I've got a Big Sure VM and Spice video is terrible, its pretty much unusable.

[–] [email protected] 1 points 1 year ago

Then go for the Amd asap.

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