| Cooler Master Real Power Pro 1250W Power Supply
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Testing (continued):
For a final check on the Cooler Master Real Power Pro 1250W Power Supply's performance, the system was bulked up with even more components on top of the previously described "load+" condition to take a look at what OCCT had to say after another 30 minute run. As OCCT runs, it can monitor the various voltages (with the help of Everest Ultimate Edition 2006 in this instance).
The following components were run from the Cooler Master power supply while overclocked slightly (5%), running the SMP version of Folding@Home, using SyncBack to transfer data from one drive to two others, and with the Seasonic "Loader" connected (new items in bold):
» 1x ASUS K8N-DL nVidia nForce4 Professional motherboard
» 2x AMD Opteron 270 processors (4x 2.0GHz cores)
» 2x Thermalright Ultra-90 coolers with 92mm Panaflo fans
» 4x 512MB HP Branded Micron PC3200 DDR REG memory
» 2x 1024MB Corsair Branded Micron PC3200 DDR REG memory
» 4x 250GB Maxtor MaxLine III SATA 3.0 Gbps drives
» 1x 750GB Western Digital SATA 3.0 Gbps drive
» 1x 750GB Seagate SATA 3.0 Gbps drives
» 1x 200GB Seagate SATA 1.5 Gbps drive
» 1x 300GB Maxtor eSATA 1.5 Gbps drive
» 1x 3D Fuzion 128MB GeForce 6200 PCI video card
» 1x 256 MB HIS IceQ X1300XT Turbo PCIe video card
» 1x PATA DVDRW
» 1x PATA CD-ROM
» 1x Firewire DVDRW
» Thermaltake Armor full tower case with 2x 120mm and 1x 92mm fans
» USB bus powered devices:
» 1x Gravis Gamepad
» 1x Mitsumi floppy drive
» 1x VoIP phone handset
» 1x Logitech Easy Call desktop
» 1x 8GB Corsair Flash Survivor
» Windows XP Professional (current)
» Fans: 10x Masscool 80mm, 2x Noctua 120mm
» And wired up to components in another system:
» 2x 80GB Seagate SATA 1.5 Gbps drive
» 1x PATA DVDRW
» 1x Thermaltake Rhythm Water Cooling Kit
» 1x EVGA GeForce 7800GT 256MB PCIe video card (with 6-pin connector)
The charts below were generated for the 3.3V, 5V, and 12V rails, and as you can see, the total ripple was acceptable and the rails are considered stable.
The 12V rail had a total ripple of 0.06V (or 0.50%) and the 3.3V rail had a total ripple of 0.02V (or 0.61%).
 
The 5V rail had a total ripple of 0.05V (or 1.00%). While this is considered stable, being at 1% at this level of load raises a bit of concern for me. I could not find a specification from Cooler Master as to what they considered acceptable, but I do know that PC Power and Cooling lists 1% as the maximum valued allowed.
While the values measured using OCCT and Everest Ultimate Edition 2006 might not be as absolute as those collected by hardware measuring devices, they do provide a fair overview for general consideration.
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