I have a corsair RM750x (purchased in 2016) plugged into a Gigabyte Z490 Vision G with i7-10700K.
A lot of times, as soon as I turn on the switch on the power supply but not on the case, the UPS alerts me to a power surge. When I measure it using a tool, I see anywhere from 80-200W being drawn without the computer being turned on, albeit only for a second or two at most.
I had this similar behaviour with an X99 board but I attributed that to a failing board rather than the power supply.
Is this normal? I don't believe so but I still need a second opinion. I never saw this behaviour before but I neither had a UPS nor a power measurement tool then, so I don't know if this has been happening for a long time.
Time to RMA this power supply?