Is my PSU okay

[robcy]

I am having difficulty overclocking, and I think it might be my PSU that is holding me back. I used Sandra to check my voltages.

CPU 1.66
Aux Vol. 1.52
+3.3v 3.34
+5v 5.11
+12 11.86
-12 -12.36
-5 -3.45
Stanby 5v
Battery 3.14v

is that -5 reading holding me back. It is a Wintach 400w PSU that came with the case, and it has the following numbers on the side.

+3.3v 15.0A
+5v 30.0A
+12v 15.0A
-5v 0.6A
-12v 0.6A
+5VSB 2.0A

While I know its a cheap PSU, i thought 400w would be way more than enought.

Is this a something that needs to replace? If so, with what? How much does a good PSU cost? I have 1x60mm and 3x80mm case fans, and a cold cathode light, plus what is listed on my sig.

 

[Nohr]

The rule with power supplies is quality, not quantity. The numbers you got off your PSU are more in line with a 350W suppy than a 400W. That should still be enough voltage, but numbers aren't everything. I wouldn't be suprised if it was the cause of your overclocking woes.