Is this PSU faulty?

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Joined
11 Nov 2009
Posts
661
Location
Essex
Hello OcUK,

So my Mobo wasn't booting, it was reporting (via LEDs on the board) a problem with the voltage supplied to the CPU (which is running stock multiplier and voltages). I sent the Mobo off to be tested and it was reported that it booted straight into windows. So let the PSU testing begin!

Using a multimeter I got the following readings:
Pin Description = Voltage measured

24 Pin ATX:
3.3V = 3.4V
5V = 5.09V
12V = 12.29V
-12V = -11.74V
5V Standby = 5.15V
Power OK = 0.06V
-5V = Missing Pin (always been like this)


8 Pin ATX:
12V = 12.3V

The voltages above were identical for all pins with the same description (e.g. all four 12V pins on the 8 Pin ATX read 12.3V). All grounds measured 0V, which I'm almost sure is a good thing ;)

Clearly there are some discrepancies but are these typical or are the voltages out far enough to cause a problem? I have had this set up running for about 6 months.

Hardware:
Mobo: MSI Z77A-GD65
PSU: OCZ Mod Xtreme-Pro 500W 80+
CPU: 3770K (Not overclocked)

Any advice would be great.
 
Thanks for the reply. What do you mean by loading? I know they can change under high load but would you expect this PSU to boot a system?
 
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