Is there a general rule of thumb for FPS and dif systems?

Working on a solid system makes me wonder how my FPS compares to other systems. Is there a general rule of thumb, what i could expect on lower specs? Thanks.

This thread is a little outdated but it’s a performance survey with a bunch of different specs on it.

There’s no way to know how your game will run on other hardware configurations without testing. Probably the best method is to build a low-end system that’s your minimum target and test on that during development