Performance

Tested on: AMD Athlon64 FX-62 @ 2800 MHz, ABIT AT8, 2x 512 MB DDR400, WD Raptor 36 GB, Radeon X1900 XTX + Radeon X1900 XTX Crossfire

Look at the stability of the 5V line, that's pretty much as good as it gets! Great job here Sunbeam. The 12V line fluctuates a bit more, but is far from reaching critical levels.


Just like on the last Sunbeam PSU, when I measured the ripple voltage I noticed that there were two distinct ripples of different frequency. The first image shows ripple at 5 mV/div, 5 uS/div which is the way we usually test. You can clearly see the ripple with 14.4 mV amplitude.
On the second image we have ripple measured at 5 mv/div, 1 ms/div, so basically zoomed out by factor 20 on the horizontal time scale. Here we also see a nice ripple curve. I would say this is nothing bad, it was just something I noticed during testing. It has probably to do with the way how this PSU is constructed and seems to be common to Sunbeam's high-end PSU lines since we have seen it on our Ensemble 1200W review too.


Standard deviation is a statistical term, which tells how far away from the average the measurements are. In other words it's the average of the average.
A large standard deviation indicates that the data points are far from the average and a small standard deviation indicates that they are close within the average.


Sunbeam claims 80+ efficiency, which is spot on with our measurements.