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Which CPU to pair with my 4090?

vekulilivekulili Posts: 0
in Daz Studio Discussion
Hi guys, Im really new to Daz and would like to know which CPU would be better for Daz. (I have to choose between those two) 1) Ryzen 7800x3D (lesser cores, lower clock) 2) Ryzen 7900x (more cores, higher frequenz) I dont know if the cores benefit anything in Daz? Does the higher Corecount help to render faster? Or does it make it more easy to handle higher Count of things in your Libary? In all the reviews i looked at the 7900x does better in Rendering, but im not sure if this is true for Daz too, because all those Tests most of the time are done in Blender / and other software? I would really appreciate your Input :) And would it make sense to switch from a normal ssd to a pcie 5x4 SSD? And before i start to setup Daz i would like to know if it would be bettwr for Daz to be installaed on the same drive as its Libary or is there no difference if i would just install it on C: and the Data on D:? Thank you very much in Advance !=)

Comments

  • LeanaLeana Posts: 11,640

    If you have a 4090 and use Iray, then most of the time you'll be using only your GPU to render (unless you're rendering a very big scene which doesn't fit in the card), not the CPU, so having more cores won't help with rendering performance (you can render with both CPU and GPU but that doesn't really bring much).
    Core count and CPU speed would matter if you plan to do 3DL rendering though, as it uses the CPU and takes advantage of multiple cores.

     

    You can have the app and content installed on different drives without any problem.

  • oddboboddbob Posts: 391

    Single threaded performance is important for using the program, loading, interface stuff. Both of your choices are close in performance.

    If you render using the CPU the 7900X it will be the better option. All core workloads like blender and cinebench are good representations of relative CPU rendering performance. That said the 4090 is going to render around 20x faster than those CPUs. I only render with the GPU and leave the CPU to worry about everything else the PC is doing.

    If you render using both the CPU and GPU you're going to be adding power consumption and heat for not much if any speed benefit.

    If you're also a gamer get the 7800x3d, they're great for gaming, if not then I'd probably get the 7900x.

    I'm using 64gb of system ram with my 4090 and it's fine for my uses, others might say you need more. Check ram compatibility on your motherboard's QVL list. Modern PCs can be fussy about ram speeds and number of slots filled.

    Never used a PCIe 5 drive, they're still expensive and run hot. I've got a good Gen 4 drive with windows, programs and some games on, a cheap but higher capacity Gen 4 with studio content and older games on and a couple of old SATA SSDs for my stuff and backups. You'd find it hard to notice the difference when loading content off any of them.

  • crosswindcrosswind Posts: 6,841

    As for Daz Studio application, more cores won't help since DS is just single threaded with one core utilized... but higher frequency may help with assets loading and computing.

    While if you go for rendering with CPU, more cores will be surely helpful as others said... Since you have 4090, I don't think rendering with CPU will be your option... so pay more attention to VRAM and RAM rather than CPU. 7900x is a good choice already.

  • Richard HaseltineRichard Haseltine Posts: 100,493

    Some parts of Studio are mutli-threaded, but much of it does not lend itself to splitting into independent threads.

  • nonesuch00nonesuch00 Posts: 18,076
    edited August 20

    You want the CPU that has the fastest lanes (as a single core) to load the fastest SSDs into RAM fastest and also to process all the scripts that DAZ Studio has to run to load the model data and place it into a scene fastest. That's all less important than render time once the scene's built especially if you don't build a lot of complex DAZ scenes.

    Post edited by nonesuch00 on
  • Willy2Willy2 Posts: 175

    When we use DAZ and launch a render (sometimes long) we like to do something else. A more powerful processor is therefore always very useful. But with Daz Studio, an AMD Ryzen 5 is already more than sufficient (I have two PCs with AMD Ryzen 5 and 7 and I don't see much difference between these two processors when I use DazStudio) For rendering, a powerful graphics card will do the job faster but the rendering quality will not be better with a less powerful graphics card. Your question should therefore not be limited to DazStudio but rather to your way of working. Personally, I think that a more powerful processor will allow several programs to run simultaneously in better conditions. Given the power of your processor, I also advise you to have at least 32 GB of RAM.

     

  • jmtbankjmtbank Posts: 175

    If you are not doing animation in Daz and not a gamer, I'd just stick with an AMD 7600x for now and upgrade it later.

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