I think PSUs are a very common factor in system instability. If you're suffering from lock ups or reboots and you aren't overclocking, I would look to the PSU f

I think PSUs are a very common factor in system instability. If you're suffering from lock ups or reboots and you aren't overclocking, I would look to the PSU first. That being said, you can go a little crazy if you pay too much attention to detailed PSU benchmarks. there's a threshold where a PSU is good enough. I mainly look at the efficiency curve when shopping for a PSU. A more efficient supply won't get as hot for a given load, and so its components should last longer, and should have more headroom to degrade before they eventually do fall out of spec. I reused a 10 year old "gold" 850W Corsair PSU in my zen3 build. It had some noticable inductor whine when the system was idle and I moved the mouse. After a year I got a 6800xt GPU, and it kept trucking along for another few months. I did some GPU overclocking and stress testing one Saturday, and my PC wouldn't start the next day. It had a good run for PSUs I suppose; it outlasted its 7 year warranty. I bought another 850W Corsair PSU to replace it, with "titanium" efficiency rating and a 10 (or was it 12?) year warranty.