Power Supply, Voltage Rails....

[Solarius]

Hey guys.

I amJ investigating why my mates comp keeps crashing in games and programs back to desktop.

When checking the voltage rails using 'SpeedFan' it's come up with somethign a bit dodgy that I dont really understand. Can anyone shed some light.

(Needed - Actual)

+3.3v - 3.34v
+5v - 5.16v
+12V - 11.86v
-12v - -6.93v <-- Dont understand this.
-5v - 0.53v

Most of the rails seem fine but the -12v one caught my eye. Is that ok?



Cheers, Sol

 

[PhillyDee]

The -12V rail isnt used anymore, but it is a required rail for the ATX standard. Plus, sometimes software / bios can report the voltages wrong. If you are in any doubt, you are best off using the reliable method of a multimeter or PSU tester.

 

[Solarius]

Well,
The machine I actually talking about is an AMD 2600+ system using socket A.

Would this -12v rail be a culprit for causing instability for the machine?



Although speedfan may not be correct I have another friend with similar system set up.

His system is reading the rail voltage rails all correctly or within a small percentage out.