From the fact sheet I found it’s mostly making sure the OS is configured for sleep by default and a minimum 80+ gold rated PSU if you have a 600W+ unit. Knowin

From the fact sheet I found it’s mostly making sure the OS is configured for sleep by default and a minimum 80+ gold rated PSU if you have a 600W+ unit. Knowing Dell, it’s probably the power supply not meeting 80+ gold efficiency. EDIT: I guess there’s max allowed power during ACPI S3 state as well. 10.3W max for a system <32GB of RAM. That’s pretty rough, given even good quality DDR4 is going to need ~1.5W per DIMM during S3. But given base models of these systems will almost exclusively use 2 DIMM’s that still leaves 7W to idle with, tough but manageable. Not that it matters - nobody should be buying any of Dell’s Alienware desktops. The chassis provides terrible airflow and the components inside will thermal throttle like crazy.