The 8920 has a slot for a SSD which is PCIE. I have read several posts concerning issues with a Samsung SSD being used as the boot drive. Is the WD Black PCIE SSD compatible with the 8920 when used in the SSD slot for the boot drive?
You can click the link below for information using a PCIE SSD drives.
What are PCIe SSDs and how to use them as a boot drive for a Dell PC?