I finally tested the 12v rail on my psu with a multimeter

[Mithrandir]

The 12v rail on my Xigmatek NRP-MC651 psu shows a relatively low reading. In the bios it's 11.52v and even lower in XP/vista, showing 10.91v to 11.0v usually. I've always been concerned but also knew software cannot be relied upon.

See pic:



So, I decided to test the rail this morning using a cheapy Multimeter brought from maplins a while back when they were on a BOGOF offer (for fiver or so)

Here are my findings:

Bootup


Start of Furmarking


Near end of Furmarking


Glad they are near 12v and not 11.52v or even worse at 11.0v/10.91v

[Sputnik]

The ATX requirement lists 11.4 - 12.6volts as being acceptable for 12 Volt rails so, Either way there was nothing to worry about.

[Mithrandir]

The ATX requirement lists 11.4 - 12.6volts as being acceptable for 12 Volt rails so, Either way there was nothing to worry about.

Yup, but concerned it was closer to the min spec value which is not good, and inconsistencies between the software and bios value I decided to check.

[peterb]

With a cheap £5.00 uncalibrated multimeter - the most you can say is that it is "around" 12 volts - but then that is pretty much all you need to know anyway!

But as you say, the software monitoring is pretty inaccurate anyway, depending on how lucky yopu are with the sensors.