Im on a framwork 16 with the cheaper amd cpu, 64gb ram, no dedicated gpu yet tho waiting till that matures a bit (so i can run large llms locally) before i buy one. Performance is great especially with amd since they tend to have many cores. Most things require very little resources and those that dont i can just passthrough more resources. Once uve eaten the virtualization overhead (its surprisingly little) and the multiple instances of linux overhead (also minimal nowdays) the performance is pretty much no different from bare metal u just gotta pass through more resources where u need em (gaming/coding/cad qubes etc).

Qubes is pretty smart ie i can give a qube basicly no initial memory (as long as its enough to fit all monitors worth of pixels in memory) and then give it a large max memory allocation and it will only use what it needs it wont use the entire allocation if it doesnt need it. Same as disk everything (unless u configure otherwise) is a thin volume so u can allocated more storage to a vm than u even have available to the system as a whole.

Btw got split password managment working. God i hate systemd.