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Voltage Concerns on PSU

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  • Power Supplies
  • Systems
Last response: in Systems
May 3, 2014 5:04:34 AM

So running Cupid monitor below you can see the voltages are lower then expected on things like the 12v or 5v.. one thing that concerns me also is the -5v is -8 higher then expected... I'm not very technical when ti comes to PSU and voltage levels.. these have remained consistent after multiple restarts. So is my PSU bad and should I replace it?

I just had to replace my motherboard and my PSU (OCZ Fatality 700w) is about 3yrs old.

When I checked it in Gigabyte's UFI Bios it shows:

12v = 12.029v
5v = 5.135v

So should I trust Cupid or the Bios?

I have the following:
Phenom II 945 Deneb
SSD
HHD
6x USB's
GTX 560 TI

I also have a CX500w Corasir PSU 80Plus Bronze new in the box. Thing is I can return it for a refund if my current PSU is ok.. if not i can open it and use it.

Suggestions?

More about : voltage concerns psu

a c 203 ) Power supply
May 3, 2014 5:07:12 AM

HWmonitor is not always accurate. Take the reading s with a grain of salt. If the power supply can't supply 12V on the 12V rails the pc wouldn't boot up.
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a c 184 ) Power supply
May 3, 2014 5:09:50 AM

-5V is no longer used in modern PCs or PSUs, and thus is basically worthless.

The calibration of motherboard voltage sensors is notoriously worthless.

I suggest you get a multimeter and actually check them, though I expect they are fine.
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a c 179 ) Power supply
May 3, 2014 5:20:29 AM

if you wish for accurate voltage readings try through bios, else use a multimeter as previously suggested as it is the most accurate method!
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May 3, 2014 5:34:08 AM

As mentioned in my original post I did check the bios and it showed
12v = 12.029v
5v = 5.135v

This is a brand new Mother board
GIGABYTE 990FXA-UD3
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Best solution

a c 179 ) Power supply
May 3, 2014 5:41:41 AM

c911darkwolf said:
As mentioned in my original post I did check the bios and it showed
12v = 12.029v
5v = 5.135v

This is a brand new Mother board
GIGABYTE 990FXA-UD3


yes, im sorry, it does look good though!
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