Testing & Performance
CPU: Intel Core i9-9900k
Motherboard: ASUS ROG Strix Z390-E
RAM: 32GB Corsair Dominator Platinum 3200Mhz
GPU: Nvidia RTX 2080 Ti Founders Edition
SSD: Samsung 960 PRO 2TB
OS: Windows 10 Professional X64
We’ll start out 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 12mV peak to peak ripple. While not the best on the market, this is a fairly decent result. You can see a few small spikes here and there making up the 12mV ripple, the actual average ripple is quite low, almost beyond our ability to measure it.
The 5-volt rails fairs about the same at around 14mV of ripple peak but also averages much lower.
The 3.3V rail does an almost flawless job with only 2mV of ripple. This is really pushing the limits of what our lower cost O-scope can even pick up. Modern systems typically put very little load on the 3.3V rail.