Normal 12v voltage fluctuation?

[RichCoulson]

My power supply's 12v voltage continuously fluctuates between 11.5 and 11.8 based on the Intel Active Monitor. What is an acceptable fluctuation? Is it possible I have a voltage drain which is causing the fluctuation? It is a GoogleGear case with 300watt power supply.
Thanks.

 

[Zepper]

The spec on the 12V rail is +/- 10% or 10.8--13.2V. I like mine to be within +/- 5% which is 11.4--12.6V. Yours qualifies in either case.
No big woop...
.bh.
:moon

 

[Tab]

Everything flucuates on my awesome Antec PowerSupply. Its just a problem when it fluctuates too much.

 

[RichCoulson]

Mine fluctuates from 11.5 to 11.8 and then back down to 11.5 every couple of seconds. I have had two bad motherboards with this power supply, which makes me a little worried. Maybe it was just a bad batch of Intel motherboards and not the power supply....

 

[BG4533]

Originally posted by: Zepper
The spec on the 12V rail is +/- 10% or 10.8--13.2V. I like mine to be within +/- 5% which is 11.4--12.6V. Yours qualifies in either case.
No big woop...
.bh.
:moon

I believe Intel specifies PSUs should hold at least 5%, not 10%.

I would not worry about it much, but if you do add more components or upgrade keep a close eye on it. Some PSUs just dont hold voltages well under any load, but most all start undervolting a bit as they become loaded down. That is likely what is going on with yours.

Brian

 

[Ketchup]

Your problem most likely is with the hardware monitor on the motherboard, which never gives you the exact voltages, but is useful as a guide only. If you really wanna find out if your 12v is weak, get out a voltmeter. I think your voltages are probably ok though.