DDR5-6400 ram for Precision 7875 and Threadripper pro 9000 series

Hi everyone,

Do you think that buying this Dell OEM memory:

https://www.dell.com/en-us/shop/dell-memory-upgrade-64-gb-2rx4-ddr5-rdimm-6400-mt-s/apd/ad089130/memory

Would work at 6400 MT/s in a Precision 7875, even though the fine print says that it's been only validated in PowerEdge servers? What are the chances? Easier than winning the lottery, or harder?

In other words, is the motherboard of the Dell Precision 7875 physically and electrically capable of supporting 6400 MT/s DDR5 memory??