Fan noise in SLI

[IndieSchmindie]

I've just added another a second GTX 275 to my system for SLI.

This all works great but with one slight annoyance which is the fan noise.

If only 1 card is plugged in (and it doesn't matter which one), the fans will spin at 100% for about 10 seconds and then go to normal as the system is posting.

However, if both cards are plugged it, the fans continue to spin at 100% until Windows has loaded up the drivers at which point, presumably it's telling them to go back to normal.

Now this doesn't sound like too much of a problem, but I boot the system into other OS (Linux and OSX). This means that if booting into either of these systems, the fans are always stuck at 100%!

Is there a way to force these to just start up at a low fan speed and raise if needed like they do when plugged in independently?

 

[Liampope]

Hmmm - let's look at it from another perspective... What about an SSD so that windows loads quicker?

 

[andicole0]

Water cooling.

Andi.

 

[IndieSchmindie]

Hmmm - let's look at it from another perspective... What about an SSD so that windows loads quicker?

I don't care about the few seconds extra to load windows. The problem is that if I'm booting to a non-windows OS, the fan will constantly be on 100%

 

[Simon42]

I once had the same thing with a single 9800GTX+ which I ended up switching it to a PC that always runs Windows.

Do all GTX 275s do this in SLI? If not then perhaps a BIOS flash may be the fix if you can find a compatible one without the issue.

 

[uv]

I don't care about the few seconds extra to load windows. The problem is that if I'm booting to a non-windows OS, the fan will constantly be on 100%

Then the issue is with Linux drivers. Maybe post in the Linux subforum?

 

[IndieSchmindie]

Then the issue is with Linux drivers. Maybe post in the Linux subforum?

Not really. It shouldn't rely on the OS at all. Would you expect they to be blowing on 100% if you were just changing your BIOS settings and they are at their coolest?

 

[IndieSchmindie]

Do all GTX 275s do this in SLI? If not then perhaps a BIOS flash may be the fix if you can find a compatible one without the issue.

I'd be interested to know the answer to this if anyone else is running GTX275 in SLI. A BIOS flash is most likely to be the answer.

 

[IndieSchmindie]

Since starting this thread, I've seen the same behaviour on 2 different boards with SLI 260's in. Looks like the GTX cards have something in to tell the fans to go at 100% when there is more than one graphics card installed