Thanks for your feedback, @TeddyAstie and @gecant . From your answers and the discussion in Non-server CPU compatibility - Ryzen and Intel I conclude, that the benefits of the 8 V-cache cores vs. the 8 turbo cores are just irrelevant. For XEN they are transparent and not really different in terms of performance. Hence, in a typical server environment we just let XEN randomly choose the cores and don't think about different "performance cores" that COULD be faster in specific applications like games.

Hey @olivierlambert and @andyhhp , thanks for your quick reply. That means it's not a problem at all. But we can't use all of the CPU's performance features either. However, these would only be used for specific computing operations (e.g., games) and would have little to no relevance for standard server applications, right?

This is an AMD Ryzen 9 7950X3D host.

@gecant, I'm picking up on your discussion again to ask another question about the 7950X3D with 16 CPU cores:

If I'm reading this correctly, this is an “asymmetric” CPU with 8 cores featuring 3D V-Cache technology and 8 standard cores for higher clock speeds. How does this work with dynamic allocation in XEN? Do you have any experience with this? Or do you assign domUs to specific cores? But if so, how do I know which cores are the performance cores?

That's a lot of questions, but basically, I'm just not entirely sure because XEN usually uses symmetric CPUs where all cores and threads deliver the same performance.

I'm picking up on your discussion again to ask another question about the 7950X3D with 16 CPU cores:

If I'm reading this correctly, this is an “asymmetric” CPU with 8 cores featuring 3D V-Cache technology and 8 standard cores for higher clock speeds. How does this work with dynamic allocation in XEN? Do you have any experience with this? Or do you assign domUs to specific cores? But if so, how do I know which cores are the performance cores?

That's a lot of questions, but basically, I'm just not entirely sure because XEN usually uses symmetric CPUs where all cores and threads deliver the same performance.