[NAME] The Setup and Specifications only indicate memory speeds of 3600 MHz, 4000 MHz, and 4400 Mhz are supported and 128 GB is only supported at 3600 MHz. I do not believe that XMP is supported, it never was in XPS models before the XPS 8950. 
How do I get DDR5 4800MHz ram speed? I have an XPS 8950 with 128GB of ram that is set to only 3600MHz? That is too slow. How do I enable the XMP in the BIOS so I get the full potential out of my very expensive ram?
XPS 8950, DDR5 4800MHz ram speed?