Biostar TForce 570 SLI Motherboard
AMD A64 X2 6400+ @ 3.4Ghz 1.5v
Thermaltake MaxOrb CPU Cooler
XFX 8800GT @ 750/1050 1.1v
3 x 74Gb WD Raptor Drives
1 x 300Gb Seagate Drive
16x DVDRW, Floppy Drives
SoundBlaster Live! Card
6 Fans, 4 USB Devices
I tested the Real Power Pro 750W using a Fluke multimeter to measure the outputs of the +3.3v, +5v and +12v rails. The +3.3v reading was taken at the main ATX motherboard connector while the +5v and +12v were taken from one of the available molex connectors. The other +12v reading was taken at the PCIe connector attached to the video card. I recorded the outputs of the power supply in two different states, one while running at idle within the OS, the other at full system load. To generate load conditions I ran the SMP F@H client, 3DMark06, Disk Defragmenter and a DVD-RW burn process simultaneously.
As you can see from the graph, the +3.3v and +5v outputs did not change much at all regardless of load. The +12v did drop half a tenth of a volt under load, which is nothing to get excited over, however the fact that both dropped nearly the same indicates there may not be good separation between the +12v rails. Fluctuation in the readings was very minor, consisting of +/- 0.01v on the +3.3v and +5v and +/- 0.02v on the +12v legs, and that only at load.
On to final thoughts and conclusion.
