Windows 11’s system requirements are completely arbitrary. This fact is backed up, by installing the October 5th release on a 4th Generation i5 Dell Inspiron, with absolutely no problems at all.
Here is how to do it.
Download and create a Windows 10 and 11 installation on two USB keys, from the official Microsoft Media Creation Tool
Once the two USB keys are finished. On the Windows 10 USB key, go to the “Sources” folder, and delete or backup “install.esd”. It should be about 3GB in size
Copy over the Windows 11 “Install.esd” file on the Windows 11 USB key from “Sources”, to the Window 10 USB key, in “Sources”. This should be about 3GB in size as well..
After this, just remove the Windows 11 key and reboot. You will see the purple Windows 10 install splash screen. Go through the process of deleting and creating new partitions and install.
After rebooting again, you’ll be greeted by the Windows 11 set up screen.
Alas, you’ll have Windows 11, despite Microsoft threatening, no entitled updates, or your PC will spontaneously combust.
It is unknown, how long Microsoft will allow this. This process does work perfectly and Windows 11 functions.