Disable CCUs/Cores on ASUS WRX80E-SAGE WiFI

Hardware Hub Motherboards
1

Does anyone know if it’s actually possible to disable either CCUs or physical cores on a Threadripper PRO (5955WX) in the ASUS WRX80E-SAGE WiFi BIOS?

I found a “Gaming Mode”, whose description implies that it would disable one of the CCUs (and indeed this is a common feature across manufacturers), but turning it on didn’t actually disable one of the CCUs. In OS I still had 32 threads and they were all being utilized. The description for “Gaming Mode” is, in part, “[if Enabled]… the CCD control option will not work any more” and “If user want to use the CCD control under AOD make sure set Gaming Mode as Disable”.

Assuming AOD stands for “AMD Overdrive”, the only option in there for CCD is in Advanced\AMD Overclocking\AMD Overclocking\Precision Boost Overdrive as “CCD Frequency Optimizer”. No options for actually disabling a CCD.

2

I’m not really familiar with ccd management in gaming but here’s a topic from Jayz two cents on youtube:

I hope it will awnser some of your questions.

3

I know this is a thing on epyc but afaik thread ripper doesn’t support it

4

Didn’t see this thread, what problem are you trying to solve by disabling cores?

The state of scheduling in Windows is really bad. I had to turn off hyperthreading on my Saphire Rapids because of the windows issues with over 64 logical processors. Some of the issues have been fixed.

I also use Process Lasso for when I want to restrict apps to a core or group of cores. You can also do that with task manager, but it’s a bit of a PITA. It won’t help of the application is doing it’s own thread management or creating extra threads because it sees a lot of cores.