quality of regulation in Enermax Pwr/Sply

[HTcracker]

My new home built has an Enermax 431 watt power supply. It is supposed to be AMD approved, but I started getting voltage warnings from the
hardware monitor supplied with my Soyo Dragon plus MB. The "Smart Guardian" monitor says my neg. 5volts is around -5.40. I am an industrial electrician,
and instrament grade power supplies I play around with are usually much tighter then that, and I would expect a quality computer power supply to
be tighter still. Does this seem like poor regulation to anyone? how accurate is smart guardian? for that matter where is the monitor monitoring?
is it looking at the power supply or somewhere on a MB regulation scheme? Opinions would be apreciated.

 

[bozo1]

The negative voltage rails aren't used anymore.

Smart Guardian, MBM and the like just read the values supplied by the onboard montoring chip - Winbond or whatever your particular board uses.

 

[BD231]

Motherboard monitors are horrible for anything outside of temp readings, you have nothing to be worried about.

 

[Mem]

<< The "Smart Guardian" monitor says my neg. 5volts is around -5.40. >>



My -5v reads 0v with MBM, so I agree with bozo 1 comments, anyway if your stability is fine I would not worry.Btw Enermax PSUs are still very good ,I`m using two at the moment.

 

[Workin']

ATX v1.1 DC output voltage regulation specs:

+12v = +/- 5%
+5v = +/- 5%
+3.3v = +/- 5%
-5v = +/- 10% - therefore you're still good at -5.4v
-12v = +/- 10%
+5vsb = +/- 5%

As you can see that's not very tight regulation in the grand scheme of things.