Testing & Performance
We’ll start by saying we aren’t equipped to do extremely detailed electrical analysis required to pick apart a modern power supply. It takes laboratory-grade dedicated equipment, so we’ll have to make do with some less precise testing.
While we normally use a good Fluke Digital Multi-meter, we’ve found the onboard monitoring solutions in modern motherboards to be quite accurate and able to be easily logged with utilities like HWiNFO.
Next, we’ll look at ripple on the rails with our Owon VDS-1022/I Digital USB Oscilloscope.
The +12V rail under a stress test load registers a peak of 200mV peak to peak ripple.
The 5-volt rail does extremely well with 20mV of ripple but also has very little load in our test configuration.
The 3.3V rail does a great job with 40mV of ripple. Modern systems typically put very little load on the 3.3V rail with most M.2 drives pulling most of their power from the 3.3V rail.