Sorry, I’m not very used with server stuff, if I buy an Intel CPU without an integrated GPU like most Xeon, then I wouldn’t have enough pcie lanes for a GPU because all is taken for nvme drives
Specifically, the motherboard ipmi is powered by aspeed ast2500
If I understood right, that chip will act as a 2d basic graphics card that’s enough to see what happens that day the server is unresponsive
I don’t plan to connect a monitor, it’s just that I’m scared if I break truenas and I can’t connect via ssh, then I could still see the local screen from the management Page on the browser
If the motherboard has a built in 2d video card you'll be fine, otherwise you can try via serial which will be slow. Ipmi can sometimes do video or it's serial over Lan.
Serial bit will be slow and might not be default so the first bit night be really tricky. Also some systems won't post with a video card, especially in the consumer world.
I'd personally boot with a GPU then swap it out once the system is correctly configured for ssh access.