What kind of hardware and its specifications are needed for creating animated videos on a PC ?

I imagine something like this:

Here's the reqs for Blender, another software that might be of interest
- When you have blender, you certainly don't need Da Vinci ??
  And blender can work perfectly fine on Mx Linux l suppose ?
Is Rocky Linux a distro ?
- It is! But there are unofficial ways to get it to run on other distros too, such as
  https://github.com/H3rz3n/davinci-helper
- Yes it is minimally at least in spirit the successor to the Centos distribution. Though if you are new to linux. Something like mint would probably be a better starting point. The nice thing about Centos and Rocky though. Are that their long-term support is some of the best. And for things like DaVinci resolve. They are one of the few distributions technically supported by the developer. You can get resolved on other distributions. They just aren't officially supported.
  The main system I run on is a 6th gen i7, 4 cores, 8 threads. 16gb ddr4 with a second hand AMD 5400 with 4gb vram. If you're doing 3d. Which I assume you are, vram will likely be the first hard wall you might hit. If your scene takes up more than the total vram of your system your speeds will likely crater or crash outright. After that your system Ram is the next big determiner. 3D scenes can be very data intensive. Even if you have a video card with tens of gigabytes of vram. If you have to transfer small chunks through your system Ram to get it there it's still going to slow it down. After that a CPU is important. But less so than you might think. Rendering you are going to prefer to do on your GPU or APU. It is exponentially faster than doing it on the CPU alone. Though modern blender allows you to use both at once. As well as multiple graphics cards.
  Honestly just about anything from the last 10 years is an okay starting point.
- Yeah. It's a weird distro that Davinci seems to be really committed to for some reason. Davinci Studio on Linux is a bit of a mixed bag. There are several known problems with it mostly related to it being built with outdated libraries that most distros don't ship with anymore (them including newer ones instead). The other major issue is just around missing codecs, although if you pay for the non-free version it includes the codecs as well.

Really depends on what kind of animation we’re talking about here. Are you talking about the flash cartoon animation like in Adult Swim cartoons or are you talking about 3D animations like Dreamworks/Pixar films? And how good do you want them? Are you fine with 90’s Veggie Tales quality or do you want 2025 Pixar level quality?

That wholly depends on what and how you’re animating. 2D animations with something like a CSS based animation software only require basically anything with a CPU. Simple 3D animations, like source engine, usually require either decent integrated graphics or a dedicated GPU. Complex 3D animations, like some of the stuff you can do with Blender, require at least 8ish GB of vram and a decent GPU. Then if you want to generate animations with AI, you’ll need at the bare minimum something like a 3090 (and a lack of ethics).

The VRAM is technically the only limiting factor in most cases, because you can only render what fits into it. The power of your GPU doesn’t really matter as to what you can render, just how fast you can render it. Within reason, of course. A thirty year old GPU isn’t going to be able to render things that rely on modern graphics APIs.

Most software also lets you render with a CPU, which just takes longer. So even a GPU isn’t strictly necessary. Just necessary if you don’t want to spend days rendering.

I am sure anything modern will work.

You would want tons of RAM and VRAM tho plus amd 69 core processor if you got cash