What transcoding settings should I use?

[Host-in-the-Shell]

With a series that old (I believe it's Intel Ivy Bridge which is 3rd gen), the only encoding/decoding available would be H.264. So long as your media collection is in that format or can be converted, you should be able to have some transcoding capabilities. That said, I don't own any intel hardware that is older than 2016ish so I can't really speak for its transcoding performance or potential limitations (if any).