If you are a pc enthusiast I'm going to say you need a sensor panel. I built one myself, 7" lcd display and driver board costs less then 30€ and the result is incredible. I always look at it for any sort of reason it has temperatures, FPS, cpu/gpu/ram usage, network bandwidth.. I always know what's going on!
Got any good sources for getting started on something like that? I use software for this but I keep it up all the time so it's probably worthwhile for me to get a separate device at this point.