[SOLVED] GPU rendering. High core clock, or high core count CPU to support it?

[xxscienceboyxx]

Hello.
I will do 3D modelling and rendering on this computer. My GPU will do the rendering. Will I need a high core clock, or a high core count CPU to support it? Either TR 1920x or i7 9700k. Does having more CPU cores help with GPU rendering? Or should I try to get a high core clock CPU so that I can model well?

Thanks!

 

[k1114]

Depends on the renderer. If it's just using the gpu then the cpu does nothing. It may still use the cpu for other parts of the render. Different renderers work in different ways. You can check your current cpu usage.

 

[TerryLaze]

CAD modelling is much faster on faster cores and doesn't multithread there are a lot of sites with articles on that one going back for many years,no idea if that's the same for 3d programs though.

 

[RobCrezz]

Depends very much on the software being used.

 

[xxscienceboyxx]

How much will cores help on Blender's Cycles GPU rendering engine?

 

[Obakasama]

In Blender you choose your rendering device: CUDA, Open GL or CPU.

Cores on the CPU does not make the GPU render quicker. Though Blender 2.8 is supposed to support rendering using both the CPU and GPU. Haven't checked for a while (still using 2.79 here).

Be careful with CUDA for Blender and try to find as many trusted benchmarks as possible. In 2.79 I find my GTX 1070 ti cannot compete with my Ryzen 5 1600, despite all benchmarks suggesting the contrary.