I've been getting poor performance in all my games despite normal thermals for the past six months.
On HWInfo, the voltage is shown to be only ~10.8V on the 12V rail and ~4.5V on the 5V rail. I'm looking to test this manually with a multimeter and find out whether this is a cause of low performance.
I have a couple of questions about this:
Most video tutorials tell you to connect the multimeter to a 4-pin molex connector, but I don't have this connector on my PSU. However, I do have a smaller floppy drive power connector with similar red, yellow and black wires. Can I use this instead?
Do I need to unplug my motherboard, hard drive and other components while testing the PSU, or can I test it with all of them plugged in and with the computer on?
Considering that my issue is primarily low gaming performance, can the multimeter accurately detect voltage when the GPU is drawing power and the PSU is under high load?
Even if I can't trace the low-performance issue directly to the power supply, there is clearly some kind of problem with it — this is because it sometimes trips the breaker. This usually happens when the power comes back after a power cut. This never happens with any other device in my home.