# How many CPU cores does UE5 support at most?

**URL:** <https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052>\
**Category:** Getting Started & Setup\
**Tags:** unreal-engine, CPU\
**Created:** [October 26, 2023, 9:17am UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052 "2023-10-26T09:17:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Anonymous\_122143d9bc86a7ff91e557cb8ab0143b](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Anonymous\_122143d9bc86a7ff91e557cb8ab0143b](https://forums.unrealengine.com/u/Anonymous_122143d9bc86a7ff91e557cb8ab0143b)\
**Post date:** [October 26, 2023, 9:17am UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052/1 "2023-10-26T09:17:01Z")

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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.

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**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [October 26, 2023, 3:33pm UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052/2 "2023-10-26T15:33:16Z")

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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](https://docs.unrealengine.com/4.27/en-US/ProgrammingAndScripting/Rendering/ParallelRendering/) 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)

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**Author:** ![AK\_Ahmmad](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AK\_Ahmmad](https://forums.unrealengine.com/u/AK_Ahmmad)\
**Post date:** [October 30, 2023, 11:56am UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052/3 "2023-10-30T11:56:04Z")

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

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**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [October 30, 2023, 3:17pm UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052/4 "2023-10-30T15:17:18Z")

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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](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/7/a/e7a99c5108481bfc460b521ecd97d975209cd544.png)

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**Author:** ![AK\_Ahmmad](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AK\_Ahmmad](https://forums.unrealengine.com/u/AK_Ahmmad)\
**Post date:** [October 31, 2023, 7:15am UTC](https://forums.unrealengine.com/t/how-many-cpu-cores-does-ue5-support-at-most/1346052/5 "2023-10-31T07:15:15Z")

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