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Is Nvdia a requirement to use IRAY?

kyoreonakyoreona Posts: 213
in Technical Help (nuts n bolts)

Hello, everyone, I would like to ask you a question

I use IRAY, and the size of the scene is often very large, 6GB of video memory simply can't satisfy me.

So every time you render, you use a CPU.

So, I thought, since the GPU memory can't meet my requirements, why not put more money into the CPU?For example, give up INTEL and go to AMD. INTEL is too expensive...

 

In that case, do I also need an NVDIA graphics card?Is this a requirement to use IRAY?

Comments

  • Richard HaseltineRichard Haseltine Posts: 109,697

    No, you can render on the CPU - though the denoiser won't work that way, so you'd need another denoising solution. However only nVidia GPUs (of a sufficently recent vintage) will be used, those from other makers will not contribute.

  • kyoreonakyoreona Posts: 213
    Richard Haseltine said:

    No, you can render on the CPU - though the denoiser won't work that way, so you'd need another denoising solution. However only nVidia GPUs (of a sufficently recent vintage) will be used, those from other makers will not contribute.

    So, you mean...

    Although my scene is large, the rendering automatically switches to CPU mode.

    But NVDIA's GPU is actually working, right?angel

  • 3WC3WC Posts: 1,147

    Why not just get a bigger nvidia gpu? That could be an option.

  • Richard HaseltineRichard Haseltine Posts: 109,697
    kyoreona said:
    Richard Haseltine said:

    No, you can render on the CPU - though the denoiser won't work that way, so you'd need another denoising solution. However only nVidia GPUs (of a sufficently recent vintage) will be used, those from other makers will not contribute.

    So, you mean...

    Although my scene is large, the rendering automatically switches to CPU mode.

    But NVDIA's GPU is actually working, right?angel

    Yes, if you exceed the limits on the GPU Iray will drop to CPU (the current Public beta adds an option to dsable falling back to CPU if the GPU(s) fail).

  • kyoreonakyoreona Posts: 213
    3WC said:

    Why not just get a bigger nvidia gpu? That could be an option.

    My scenes often included more than five clothed characters, and even using an 8GB graphics card automatically switched to CPU render mode, so I thought, since I never used the GPU, why would I buy an NVDIA graphics card instead of putting all my money into an AMD CPU?

    But I was worried that I wouldn't be able to use IRAY without NVDIA's graphics card, so I raised this issue

  • codex34_f5f1fb6f55codex34_f5f1fb6f55 Posts: 148

    If you have that many characters in a scene, do you need to use 4k images?

    My G3F standard materials are all resized to 1k images, with a second directory containing the 4k images. It's fairy easy to set up material presets to load low res or high res, and the time taken to do it would probably speed you renders up by not dropping to cpu, so you get the time back. Even 2k images would be better than 4k.

    Just a thought.

  • kyoreonakyoreona Posts: 213
    codex34_f5f1fb6f55 said:

    If you have that many characters in a scene, do you need to use 4k images?

    My G3F standard materials are all resized to 1k images, with a second directory containing the 4k images. It's fairy easy to set up material presets to load low res or high res, and the time taken to do it would probably speed you renders up by not dropping to cpu, so you get the time back. Even 2k images would be better than 4k.

    Just a thought.

    Thank you ! I will try thatlaugh

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