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Author Topic: low voltage on +3.3v line?  (Read 1886 times)

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BioHazard71

  • Guest
low voltage on +3.3v line?
« on: 15-April-05, 20:44:32 »

I have an ANTEC Truepower 430, when I monitor the voltages in speedfan or the bios I get 3.07v on the +3.3v line. Is anyone else seeing the same or should I RMA the PSU?
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HelpMe

  • Guest
Re: low voltage on +3.3v line?
« Reply #1 on: 15-April-05, 20:49:06 »

Don't trust the readings for the psu rails on speedfan and the the only accurate readings is using a mulitmeter. Anyway sisoft reported my +12v rail at 1.95v  :bonk:
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #2 on: 15-April-05, 21:31:27 »

Some proggies out there Like Sandra or others like it don't read every chip in every computer. Like was said the only accurate readings are with a meter. Try other proddies and you will find different results with each. It is well known and documented.
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BioHazard71

  • Guest
Re: low voltage on +3.3v line?
« Reply #3 on: 15-April-05, 21:33:38 »

Would the readings in the BIOS be considered accurate?
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #4 on: 15-April-05, 21:41:26 »

Not all that accurate really. Voltage level readings in a computer are more an afterthought than anything realistic anyways. They are there to so you when something is happening like a bad overclock that is pushing a componant to far more than anything else as far as we the user are concerned. If the voltages go to far out of whack a computer won't even start. That said though a Bios can affect the readings in so far as it's multiplier settings are concerned with how it sets up to interpret the data from the sensor info on the MB. However like I said for a true reading the only real accurate indication is with a meter.
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BioHazard71

  • Guest
Re: low voltage on +3.3v line?
« Reply #5 on: 15-April-05, 22:00:53 »

Not all that accurate really. Voltage level readings in a computer are more an afterthought than anything realistic anyways. They are there to so you when something is happening like a bad overclock that is pushing a componant to far more than anything else as far as we the user are concerned. If the voltages go to far out of whack a computer won't even start. That said though a Bios can affect the readings in so far as it's multiplier settings are concerned with how it sets up to interpret the data from the sensor info on the MB. However like I said for a true reading the only real accurate indication is with a meter.

OK with that said, if the system is stable should I bother RMAing the PSU? I don't have a multimeter handy.
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BioHazard71

  • Guest
Re: low voltage on +3.3v line?
« Reply #6 on: 15-April-05, 22:11:04 »

Don't trust the readings for the psu rails on speedfan and the the only accurate readings is using a mulitmeter. Anyway sisoft reported my +12v rail at 1.95v  :bonk:

What does your BIOS report for the +3.3v line? just want to see if its similar.
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #7 on: 15-April-05, 22:19:08 »

They are there to so you when something is happening like a bad overclock that is pushing a componant to far more than anything else as far as we the user are concerned....only real accurate indication is with a meter.

Clouds of thick, acrid smoke from a small fire are also tried & true indicators of an overclock "gone bad" because of excessive voltage! :shocking:
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #8 on: 15-April-05, 22:20:36 »

Skippy... Truer words were never spoken. LOL

You did know that science has proven that Computer Chips workl on Smoke? Proof; Let the smoke out and see if it still works. LOL
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #9 on: 15-April-05, 22:32:02 »

Skippy... Truer words were never spoken. LOL

You did know that science has proven that Computer Chips workl on Smoke? Proof; Let the smoke out and see if it still works. LOL

I forgot to mention that the smoke is usually accompanied by a small but distinct "POP" - but you can only hear it if you have a particulary quiet machine! ;-))

"Let the smoke out and see if it still works" has been heard by myself more than once at some SOLO II events I've been to!
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #10 on: 16-April-05, 01:11:15 »

LOL I let the smoke out at a SoloII. Coming off the starting line I over Revved a tires old Z engine. I did finish that race and did not take a last place either. Heck once it went there was nothing left but to gun the crap out of it and go.
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #11 on: 16-April-05, 13:43:55 »

LOL I let the smoke out at a SoloII. Coming off the starting line I over Revved a tires old Z engine. I did finish that race and did not take a last place either. Heck once it went there was nothing left but to gun the crap out of it and go.


Confuscious say - Smoking Tires are good, smoking PSU is very bad indeed! :nono:

Long Live Power Oversteer & 4 wheel drifts! :agrees:
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #12 on: 16-April-05, 15:50:47 »

LOL Long live getting back on topic. Sorry for the detour.
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duffyone

  • Guest
Re: low voltage on +3.3v line?
« Reply #13 on: 16-April-05, 16:43:03 »

in response to your question bio... mine reads 3.25v
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #14 on: 16-April-05, 17:48:56 »

in response to your question bio... mine reads 3.25v

Hmmm... That seems to be OK.

I'm having a "brain fart" at the moment.... what exactly is the 3.3 rail powering these days?
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Tiresmoke

  • Guest
Re: low voltage on +3.3v line?
« Reply #15 on: 16-April-05, 17:53:57 »

The memory modules and some to the vid card if it requires it. Otherwise very little.
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #16 on: 16-April-05, 18:14:52 »

3.25v would seen to be OK then...

SpeedFan & MBM 5 reports mine @ 3.14v and I'm experiencing no adverse effects, even with the OC in my sig.
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duffyone

  • Guest
Re: low voltage on +3.3v line?
« Reply #17 on: 16-April-05, 18:59:37 »

the bio guy said that his 3.3v was reading 3.07v.  I'm taxing my mem (low voltage there), but isn't a tolorance of +/- 5% OK?  If so, that would mean that bio's 3.07v would be out of tolorance....

RMA da' sucker!  o_0
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skippy9146

  • Guest
Re: low voltage on +3.3v line?
« Reply #18 on: 16-April-05, 19:25:15 »

Yeah... I think that +/-  5% is the "rule of thumb"
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BioHazard71

  • Guest
Re: low voltage on +3.3v line?
« Reply #19 on: 18-April-05, 17:05:04 »

Must of been too tired the first time  :bonk: , checked the voltages in the BIOS and the +3.3v lines was 3.24 which I is within spec of the PSU (+/- 3%).
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