My friend has an older computer running an overclocked P4 2.8 (3.5 GHz OCd) on an Asus P4P800 motherboard, 2GB PC3200 RAM, one 120GB IDE HDD and a newly installed Radeon X1950 Pro AGP card. We decided to check his PSUs voltages and discovered that the 12V rail on his recently aquired Chieftec 550W P...

I'm also interested in info on these PSUs as I have a couple of them (both 400W) in my two spare computers. I'm wondering what's an acceptable load to put on them without them going bananas.