PSU voltages off?

barnettgs · 13 Apr 2011 at 20:05

I had replaced the faulty motherboard with an used one - Asrock P4i65g board and a new PSU.

Everything is going well until I spot a couple of errors in HW Monitoring.

+3.3V - 3.34
+5V - 5.03
+12V - 11.92

-12V - 1.21
-5V - 2.24

Notice the minus voltages - should I be concerned?

Gary

Tealc · 13 Apr 2011 at 20:08

In short...No.

Software voltage monitoring is not to be trusted. Get a multimeter out. Besides what are these negative voltages for? I thought -5v was removed a while back.

RJC · 13 Apr 2011 at 20:11

I never bother with with voltages from software, mine reads 3v or something stupid for the + 12v line.

barnettgs · 13 Apr 2011 at 20:17

Ok thanks.

I was looking for some information on minus voltages in google but didn't find any.

Surveyor · 13 Apr 2011 at 20:26

Your PSU (unless it's very old) doesn't even have a -5V supply:

ATX12V 1.3

Introduced in April 2003 (a month after 2.0). This standard introduced some changes, with most of them being minor. Some of them are:

Slightly increased the power on 12 V rail.
Defined minimal required PSU efficiencies for light and normal load.
Defined acoustic levels.
Introduction of Serial ATA power connector (but defined as optional).
The -5V rail is prohibited.

barnettgs · 13 Apr 2011 at 20:53

My PSU is brand new Antec but I think its probably down to an old P4 motherboard which I bought from eBay.

Now that you have said -5 rail is not needed anymore so I will ignore them.

Many thanks

Gary