Yes, this is exactly the Dell Wyse 5060 with an AMD GX-424CC processor. This thin client is already old, which is why I decided to purchase a newer one with a better processor.
Anyway, thank you for your analysis! I learned a lot of new things. I will try to get it running with your advice and let you know how it goes.
However, this server will probably no longer be needed, since half of its cores are damaged. Previously, its computing power was fully utilized (the load was almost always 4.0), and it handled my tasks very well with four cores. Therefore, I cannot imagine using it with only half of its power available 😁