View Full Version : Is 11.3v on the 12v rail a problem?

01-27-05, 04:53 AM
I suspect I know the answer, but Speedfan is reporting between 11.1,and 11.3 on the 12v rail.My 550 psu is a bog standard cheapo unit supplied with the case.Am getting freezes every hour requiring a reboot.The other values as far as voltage are a bit on the low side.
Sparkle 6800GT.
ASUS A8V Deluxe.
IGB Kingston.
AMD 3500.
Suspect I need a higher end PSU.

01-27-05, 04:57 AM
it shouldn't exceed +/-5% deviance.

01-27-05, 05:15 AM
Better to be over than under.

01-27-05, 06:51 AM
A quality power supply is always reccomended, but put a meter on it. Speedfan (not just Speedfan though) was telling me the same thing and it was actually 12.00V idle / 11.88V under load when read by a Fluke multimeter. Of course, if you are actually having lockups its definately worth checking (I wasn't, but it scared me).

Speedfan also told me my 5V was going up and down from 2.8V-6V...so who knows.

You also don't want to be over 12.6V or you risk damage that way too.

01-29-05, 09:10 PM
Assuming the reading is accurate, 11.3V is definitely too low. Just say no to cheapo PSUs, especially with high-end graphics cards..

01-30-05, 04:59 AM
Get a multimeter. Speedfan reports anything but correct data. I have 2V onmy 12V rail according to Speedfan. :D

01-30-05, 12:07 PM
I have the 6800GT (BFG). I was having trouble with studdering every 10 to 15 seconds, mostly with Joint Ops. BFG asked me to down load Everest and my 12v rail was around 11.5. They told me that was the problem. I tried 3 different power supplies and finally found the X Connect the only one to keep me over 12 and now no more problems. Good luck...

01-30-05, 11:23 PM
I agree with the above, my A8N-SLI reports 11.52 from the MB. My multimeter says 11.95 under full load. From my experience, don't ever trust what the MB says, measure for yourself prior to purchasing expensive replacement equipment or you might be fixing a problem that doesn't exist.

01-31-05, 12:13 AM
I use the program that came with my motherboard and it says 11.9v. If that helps :-p

01-31-05, 03:39 AM
you need to use an external voltage reader as the mainboards build in voltage readouts arent always accurate,

01-31-05, 11:06 AM
I have found the voltage reading in the BIOS to be pretty right,but if you are looking in to getting a good power suppy ,IMO I would go with the OCZ power stream even the 430w OCZ is better than most all cheapo 500w no name brands.Plus you can ajust the 12v rail if needed.

01-31-05, 03:11 PM
18 is a minimum for high range cards

02-01-05, 06:31 AM
Down loaded Everest.
It's reporting 11.90v on the 12v rail,switching between the two I still get 11.30v with Speedfan...go figure.
Will try the BIOS and a Meter.