It's not breaking compatibility, because Cascade Lake came AFTER SkylakeHow can this happen? Did intel break compatibility Within one generation? This is quite weird.
No. Not Optane DCPMM.Does 10900x support optane?
Not at all, it's pretty simple:This is such confusing product support, no wonder optane failed.
Is there a reverse list where we can find the compatible Optane series for a given cpu?There's no point to list CPU's it does not work on, there are MANY MANY more of those than what it does work on.
Do you have Scaleable XEON Gen2? or Gen3? If YES, check these lists.
If NO, you're out of luck, they do not work.