"As we can see in our Factorio benchmark, we saw massive gains of over 100% when forcing the Ryzen 9 7950X3D to use the CCD with the 3D V-Cache as opposed to letting AMD's PPM Provisioning and 3D V-Cache Optimizer drivers do their thing automatically."
https://www.anandtech.com/show/18747/the-amd-ryzen-9-7950x3d... ("Conclusion")
The interesting one will be the 7800X3D.
From time to time, it can retry the test, because software frequently changes what it spends time doing.
I wouldn't be too worried about this personally, as configuring the few really sensitive apps with ProcessLasso or Aniancy is pretty easy.
Factorio players don't necessarily know anything about computers. And you don't know if they bought this CPU or if it came with their fancy prebuilt.
A properties page for the executable with a checkbox for “favour stacked cache cores” or some such.
There is currently no consumer model with 2 CCDs and X3D on both of them.
Best L3 per core outside of the X3Ds it the 7600 or or 7900 CPUs that come with the full size L3 (32mb PER ccd) but only 6 cores per CCD (instead of 8).