Is My PSU On Its Way Out?

[Nebulous]

I was running a Seasonic Prime Titanium 650w through a 7700K build and right up until I upgraded to my current rig. Seasonic PSU's are rock solid units with an outstanding warranty. Not 1 single issue ever. I upgraded the PSU to an EVGA SuperNova 850w to safeguard myself when I get a new video card. I moved the Seasonic to my son's rig since he now has my 7700K machine. The EVGA is also a solid unit, but I got this one at a super discount I couldn't pass up.