Testing
To test the power supply we ran OCCT’s PSU test for a 30 minute interval, running at fullscreen (1920×1200). Here are the results:
3.3V
5V
12V
All three tested very well, with ripple percentage of less than 1.5%: 3.3V @ 1.45% ripple (0.05V), 5V @ 0.95% ripple (0.05V), 12V @ 1.28% ripple (0.17V).
The 3V3 and 5V0 ripple levels are borderline and the +12V way in access of the permitted 120mV so not too good really?