Power Supply Fan

[Justin]

i have a Ultra X2 psu. when i boot up my system the psu is nice a quiet. however, about 5-10 min after i log on and work on my computer, the psu fan sudenly increases in volume and becomes really loud? its quite annoying. is this because it is too hot? is there anyway i can control the fan of my psu, or make it quieter in some way? hope someone can help

[Justin]

does anyone have any advice?

[mjc]

I would start looking at other causes for the heat build up and eliminate them instead of trying to not make the fan do its job.

Is the CPU cooler doing its job?

Are any vents blocked/plugged?

Are the drive cables routed in a way that could be causing airflow problems.

Also do you have some way of monitoring the temperatures?

If you do and they are within reasonable limits, then look at some sort of controller for the fan.

[Justin]

yea, the cpu is running at 32 degrees, there are no vents plugged either. any other help, my config:
AMD 64 3200
Ultra x2
Gigabyte nForce4 SLI Pro
1.5 Gig Ram
ATI REadeon x200se 256mb

here is a link to see my config: http://i57.photobucket.com/albums/g240/sloppyjimbob/ebcc245e.jpg

[saphalline]

Is there a two-wire cable coming from your PSU and going to your mobo? If so, that might be the problem. Try disconnecting it.

Other than that, does your PSU have any external sensors or any dials/buttons on the outside that you can mess with?

[Justin]

coming out the psu, nor any switches i can fool around with. the only thing i cant think of is it is defective. when i put my pc on standby, the cpu fan still runs (although, it runs like at 1% when on standby so thats not a big issue at all) but the PSU fan runs also, BUT eventually after a couple of min on standby, the PSU fan starts to slow down and be quiet again. ??? the only thing i can think of is that the PSU overheats easily. and it is once again silent when it isnt giving too much power at all to the motherboard. does this make sense? and do you think my psu is defective?

[saphalline]

If there's no way to control or monitor the PSU fan, then yes, it's probably thermally designed to be that way or it's load-balanced. I don't think it's defective - that's just the way it is. If it bugs you that much, replace the PSU. Otherwise, there doesn't appear to be anything you can do about it.

[SufferWell1396]

You could replace the fan, but i bet it wouldnt do much. all the PSU is doing it making sure your computer doent end up in a pile of rubble and flames by increasing the fan speed