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3.3V is very low, is that a problem?

post #1 of 13
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Noticed this today so I brought the rig back to stock clocks on everything except the RAM to see if that was the problem. Even at stock speeds my 3.3V is reporting 1.9V in HWMon. Is this a sensor error? what is the 3.3v even for?
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post #2 of 13
I think the 3.3v is for HDDs, CD-ROMs etc. but correct me if I'm wrong.

1.9 is a bit low... weird.

Hopefully we can get a PSU guru here to enlighten us more smile.gif
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post #3 of 13
Just ignore it, software monitoring of voltages is largely useless. The sensors are cheap and uncalibrated so the readings can be way off. If your 3.3V rail was really at 1.9V then the things it is supposed to power would not run. I believe the 3.3V rail is used for memory among other things.

You need a digital multimeter to properly measure the readings for the various PSU rails.
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post #4 of 13
inb4phaedrus&pioneer
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post #5 of 13
Yeah that is very low, i wouldn't trust software though and as stated above if it was that low, you can always go in the bios and it should be somewhere under power (not sure) maybe under the temperate tab, and it tells you all voltage readings.
post #6 of 13
Quote:
Originally Posted by Socks keep you warm;14458687 
Yeah that is very low, i wouldn't trust software though and as stated above if it was that low, you can always go in the bios and it should be somewhere under power (not sure) maybe under the temperate tab, and it tells you all voltage readings.
Sadly the BIOS readings are the very same uncalibrated and largely useless sensors.
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post #7 of 13
Get a multimeter, and test it if you're that worried. If you've got a good PSU, then its more than likely nothing at all to worry about. Software readings of voltages are useless (including BIOS). The only one that's even remotely close to accurate is vcore.

So yeah, there's nothing at all to worry about on that reading. If it really was at 1.9v your machine wouldn't even turn on.
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post #8 of 13
As has been said, the system would not be functioning, at all, if that reading was correct.

Get out your multimeter and measure them yourself.
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post #9 of 13
If it really was 1.9v something would have fried by now.

As above, get a multimeter, or check your BIOS for more accurate readings.
post #10 of 13
My system fired up with 10.7V on the 12V rail. It didn't run games, but it did at least start up. I'd check it with a multimeter to be safe
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