How many CPU cores does UE5 support at most?

Hey guys.I’m recently considering how to build my next PC for UE5 and Houdini rendering.Does UE5 support EPYC 9754x2,up to 256 core 512 threads?If not ,can it support EPYC 9654x2,up to 192 cores 384 threads?If it cannot support these threads,I will have to purchase threadripper 7995wx then.

Hi GoTecGo,

It’s my understanding that the heavily multi-threaded aspects of UE are Shader Compilation (Where you will see multiple ‘shader workers’ spin up in your task manager when compiling shaders) and Engine Code compilation. (As in compiling the editor from source code).

I’ve also seen Parallel Rendering mentioned for rendering out movies, but I have no experience using it.

I’m unsure about the upper limits of these multithreaded operations. (Since you’re mentioning a double-cpu setup)

Packaging a game is a multi-threaded process too, right?

Hi AK,

Packaging will likely need to compile shaders for other platforms, so more cores could speed that up.

To get a better view of what’s happening press CTRL + SHIFT + ESC to bring up your task manager and keep an eye on which processes are running.

taskmanager

Hi Astrotronic. Yes, this is what I thought too. Thank you for your reply.