Testing

For testing power supplies, we get together the most power hungry of all our hardware, get it all plugged in and then test the rail's outputs at idle and at load to check their stability.

Testing is performed using Asus Probe. A multimeter is used to check accuracy of readings.

The pieces of hardware that the Super Silent CP-520A4 powered were:

Core 2 Duo E6600 @ 2.7ghz
Asus P5W DH Deluxe
MSI 8800GTS
2gb OCZ Special Ops. Urban Elite @ 900mhz
1x 36gb WD Raptor
1x 80gb WD Caviar SE
1x LG CD/DVD Writer combo.
3x 120mm Noiseblocker fans

Results

Throughout testing the Super Silent's rails were very stable indeed, never fluctuating more than 0.033v. However although the 3.3v was pretty much spot on, the 5v and 12v rails were not the tightest around. This shouldn't cause any problems as stability is the most important factor, but those that only go for components with perfect statistics may need to think on this one.

Noise

The Chill Innovation 520w PSU was almost totally silent. It didn't make a whisper of noise throughout testing and you practically had to have your ear pressed against its rear to hear even the slightest noise.