+v5 too high?

[sanchaz]

Core i5-750 @ 2.67Ghz
Asus P7P55D-E
Corsair HX-650

Not really overclocking, rather just undervolting.
But i got this strange +v5, always, with stock vcore or undervolted.
Ok so i have some strange values on the +v5 with asus Probe II.
I don't know if they're correct or not as asus Probe II shows different +v12 from HWMonitor.
What program can i use to check voltages?

HWMonitor:



Asus Probe II:

 

[saaiello]

5.16 is perfectly acceptable reading. Download HWMonitor from CPUID its always been accurate for me and i have compared voltages with a multimeter and it was always within .02 of what the multimeter was showing.

http://cpuid.com/hwmonitor.php

 

[darkguset]

The ATX specifies a +/- 10% variation in the voltage, so a 5V is considered ok for the ranges of 4.5V up to 5.5V. So 5.16V is perfectly normal and no need to worry about it.

 

[sanchaz]

5.16 is perfectly acceptable reading. Download HWMonitor from CPUID its always been accurate for me and i have compared voltages with a multimeter and it was always within .02 of what the multimeter was showing.

http://cpuid.com/hwmonitor.php

i do use it but it can't read the +v5

 

[sanchaz]

Best answer selected by sanchaz.

 

[jsc]

Sigh.

ATX specs say all outputs are +/- 5% except the -12 volt output which is +/- 10%

 

[sanchaz]

ok anyway i'm still ok, up to 5.25

 

[JackNaylorPE]

Run OCCT and graph your voltages while under a torture test of you're concerned.

And while the ATX spec allows some pretty wide variations it must be remembered that wavering voltages makes for difficult OC'ing

 

[sanchaz]

but if they don't waver around i'm ok?

 

[sanchaz]

so i played around with occt: Linpack and the 5V went from 5.16v to 5.14v, 12V stayed at 12.04v and 3.3V stayed at 3.39v

is this ok?

 

[sanchaz]

?

 

[darkguset]

Like i said before +/- 10% on each voltage is considered OK.

http://www.formfactors.org/developer%5Cspecs%5Catx2_2.pdf#21

So for your 12V: 10.8V -> 13.2V
and 3.3V: 2.97V -> 3.63V

So the values are fine. The better the PSU quality, the less deviation you will have from those numbers and in general the less change during load-idle the better.

 

[jsc]

Like I said above, "ATX specs say all outputs are +/- 5% except the -12 volt output which is +/- 10%"

http://en.wikipedia.org/wiki/ATX#Power_supply

A good PSU with undervolt protection (Corsair, for instance) will not let you boot with 11.0 volts on the 12 volt rail. And if the 12 volt output drops to 11.0 volts, it will shut down.

 

[darkguset]

Like I said above, "ATX specs say all outputs are +/- 5% except the -12 volt output which is +/- 10%"

http://en.wikipedia.org/wiki/ATX#Power_supply

A good PSU with undervolt protection (Corsair, for instance) will not let you boot with 11.0 volts on the 12 volt rail. And if the 12 volt output drops to 11.0 volts, it will shut down.

You are right, i mixed the -5 and -12v into the ATX2.02. We have newer PSUs now. I just wanted to cool the guy down showing him that his values are quite normal and no need to worry.

 

[sanchaz]

ok thx for all the anwsers, i went for the corsair on this system as i wanted something stable and with very small variations.
I was just checking to see if my corsair wasn't faulty or anything.

thx guys.

 

[darkguset]

No problem sanchaz, enjoy your system.