PSU voltage above 13V

[David_DDD]

So my PC seem to run slower than it has to.
I have checked so many things (you can read about it in my other question)
The only suspicious thing is +12v rail in PSU. the number is too high. 13.1v - 13.2v.
I was adivesed to changed my PSU. So I did. From Corsair CX600m to CX750m. The problem remains! The voltage is the same even with the new PSU.
Is it still PSU problem? is it ok? Could THIS be a couse of my low performance?

 

[Dark Lord of Tech]

Check voltages with AIDA64 Extreme.

 

[nukemaster]

I have a feeling you have a software issue(for readings). The chance of 2 power supplies having this issue is rare.

You can check in the bios as it should be fairly accurate. A multimeter can also be used. It will not see how clean the voltage is, but will still give you an average(ripple is too fast for most multimeters.)

A much older version of the ATX spec allowed upto 13.2, but that is long dead.

 

[mbarnes86]

Hi

How are you measuring the voltage ?
A bios display of voltages ?
A software program?
Or a volt meter?

If using a volt meter find a spare molex 4 pin connector
Black to yellow should be 12 volts
Black to red 5 volts

It would be rare for two psu in a row to be wrong unless they were cheap unknown brands
The tolerance is 12 +- 0.6 volts or 5%. ( 11.4 to 12.6 )

Regards
Mike barnes

 

[JQB45]

The Corsair CX series is a poor excuse of a power supply. Simply going from one Wattage CX to the next likely wouldn't solve performance issues. It certainly wouldn't help with reliability.

Try another outlet in your home on another circuit breaker.

 

[Dark Lord of Tech]

Even though they are CX , I think this is a software detection issue.

 

[David_DDD]

I have a feeling you have a software issue(for readings). The chance of 2 power supplies having this issue is rare.

You can check in the bios as it should be fairly accurate. A multimeter can also be used. It will not see how clean the voltage is, but will still give you an average(ripple is too fast for most multimeters.)

A much older version of the ATX spec allowed upto 13.2, but that is long dead.

I think in my BIOS I cannot see the voltage of PSU. But I checked on voltmeter and it was 12v under NO load. So I think it's softwear issue as well. I am using CPUID HW Monitor

 

[Dark Lord of Tech]

HWMonitor is no good , run HWINFO.

More than likely software error.

 

[nukemaster]

I have a feeling you have a software issue(for readings). The chance of 2 power supplies having this issue is rare.

You can check in the bios as it should be fairly accurate. A multimeter can also be used. It will not see how clean the voltage is, but will still give you an average(ripple is too fast for most multimeters.)

A much older version of the ATX spec allowed upto 13.2, but that is long dead.

I think in my BIOS I cannot see the voltage of PSU. But I checked on voltmeter and it was 12v under NO load. So I think it's softwear issue as well. I am using CPUID HW Monitor

Because of the wide range of hardware monitoring chips on the market and the various implementations of them software is always hit and miss.

See

Some software is updated more or simply better designed to handle all these configs. I have seen misreads in most software, but OpenHardwareMonitor and HWInfo(sensors only) are pretty good.

I think we will have to look into other reasons for performance changes over time.

 

[Dark Lord of Tech]

HWMonitor is useless , never correct.