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EVGA 680i LT motherboard fans way too loud.

So the north and south bridge fans are ridiculously loud on this thing, I couldnt find a thin enough 50mm fan to replace the northbridge so I stuck a 40mm fan I had laying around on the heatsink and will see how well it does. Also ordered a noctua 40mm to replace it since the one that is on there is only slightly less noisy.

However the southbridge fan is the worst offender. and its not a standard size it seems, I ordered a direct replacement from amazon - http://www.amazon.com/NVIDIA-Southbridge-Chipset-Cooler-Connector/dp/B00AN8Z8F6/

Until that comes in, I was curious how dangerous not having the fan on the southbridge would be. I took the fan out, which left the metal bottom of the frame for fan (like a weird shaped heatsink) and left it off all day. And it didnt seam to get too hot, unfortunately i took the northbridge fan off as well and it got very hot and system locked up overnight so im not sure which caused the lock up.

So my question is, how much damage can I do if I attempt to leave the southbridge fan off for a few days? If it locks up again I can assume it was the southridge since the northbridge has a fan back on it. Or I could be completely wrong, but someone here probably knows more than I do about this.
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More about evga 680i motherboard fans loud
  1. Are you OC'ing? I have a 680i motherboard as well and it has never had any fans on the north or south bridge.
  2. nope, it was a cheaper board from evga that didnt have the heat pipe. http://regmedia.co.uk/2007/04/30/evga_nforce_680i_lt_sli.jpg
  3. dholster said:
    nope, it was a cheaper board from evga that didnt have the heat pipe. http://regmedia.co.uk/2007/04/30/evga_nforce_680i_lt_sli.jpg



    That would explain it then, cheap motherboards were the bane of the 680i.
  4. Mousemonkey said:
    dholster said:
    nope, it was a cheaper board from evga that didnt have the heat pipe. http://regmedia.co.uk/2007/04/30/evga_nforce_680i_lt_sli.jpg



    That would explain it then, cheap motherboards were the bane of the 680i.


    lol, yeah. this board had great reviews at the time though. It was my first build and its still going strong, had a e6400 and now its my home server with a q6600 trucking along like a champ. the fans just barely started getting annoying.
  5. I'm wondering, wouldn't be easier, cheaper and most definitely quieter to just thermal epoxy some heatsinks atop the NB/SB and dump the noise-makers entirely? a heatsink is nothing but some aluminum fins anyways, and the heatsinks themselves could be huge.. probably work better than the fans or the more expensive stock fins. I'm sure the intake fan of most atx cases would work as a replacement fan for the heatsinks anyways
  6. I had an XFX 680i LT with an OC'd Q6600. I used thermal tape to put a heatsink on the southbridge and it worked fine. For the northbridge I used speed fan to turn off the fan and I didn't see any temps over the low to mid 30's for it. The northbridge fan had been relatively quiet but got noisier over time. I had also done a direct replacement for the southbridge fan/heatsink and it was quiet for about two days which is when I put on the heatsink.

    I think you would be ok with just the "heatsink" on the southbridge for several days.
  7. what kind of heatsink? its directly under the gpu so it cant be much thicker than the nvidia fan i linked from amazon.
  8. I don't remember where I got it, but it looked similar to the 37mmx37mmx6mm listed on ebay. I looked at the picture of your northbridge - it is much larger than the LT version I had.

    I meant to say that my replacement southbridge was ONLY quiet for about two days which is why I went to the heatsink.
  9. Best answer
    Did the new fan fix your problem with less noise? I saw on amazon and was debating whether to try it out.

    My friend gave me his old rig that appears to have been a very popular setup (680i SLI w/ q6600) so i could use everything for an HTPC, but the fan on that board is obnoxious! Mine has the heat pipe that has been mentioned on here, but even with that the MCP reaches 80C without some kind of active cooling. That's just in BIOS, i don't want to know what it would get to during real use.

    EDIT: I fixed my issues after reading through the original manual (yeah...imagine that) I found online. In the manual it clearly states that if the CPU is not using ACTIVE (aka fan) cooling then the optional northbridge fan becomes MANDATORY. The computer I got from my friend came with an H60 watercooler, and that is why the temps skyrocketed without the tiny fan. I swapped coolers from my gaming rig (Hyper 212+) and it now runs cool enough to not need a fan.
  10. Clayton_Bigsby said:
    Did the new fan fix your problem with less noise? I saw on amazon and was debating whether to try it out.


    Well here's an old post :P

    i actually didn't need to install the fan, i left it off and have not had a problem in the two plus years since i asked this.
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