Okay so I am in the process of overclocking my CPU and I am doing some stability testing using OCCT. I noticed a high pitched (almost like a squealing noise but not quite) coming from my PSU. First time I heard that and although it's not that loud, it raised some concern. I immediately stopped stress testing and turned off the computer and switched off the psu. Not sure if I should RMA it or if this is normal for stress testing on some psu. By the way I have only had this psu for 3 months so it's still well under warranty. So anyone have some insight? Am I over-worrying? Just paranoid it will blow up on me.