If you'd rather not wait for compatible RAM, Crucial has it now. [URL]  
  Has anyone has any success in upgrading the RAM to 64 GB in their XPS 15 9520? I contacted Kingston, and they recommended a 64 GB kit of Fury Impact RAM, CL38.  I bought it, installed it, and got the RAM incompatibility code.  I contacted Kingston again about the issue, and they wrote back saying...sorry...after further testing, we have found that the Fury Impact RAM is not compatible.  Sorry. So, that was a fun experience. I wonder if G Skill or Corsair are going to come out with a 64 GB RAM kit that is compatible. I see in the XPS manual that the laptop RAM at 64GB tops out at 4800 MHz.  I wonder, though, are CL numbers 38 and below supported? It´s still pretty early in the DDR5 game.... Tiny Tech
XPS 15 9520 RAM Upgrade