I've found that once you've saved a profile I can go to "Edit Profile" and move the System fan slider and it will stick. You will have to set it to what you want then click "Profile, Save" then "Profile, Load" before it takes effect. Thats the only one on that page I've played/had any success with, as for the others therefore I really can't say.

Hope this helps a little.

Yes after you save a profile you should be able to set the system slider. I don't know if the chassis fans have to be taken off auto though. I've been asking about that slider since I got my 630. I had originally edited my userdflt. profile and after I couldn't get that slider to go where I wanted I just typed the value in and the profile wouldn't load any more.(it loaded when I settled for where the slider wanted to go) I since wiped the old nvidia and loaded the newer version. So if your gonna set that slider I would say to make a new profile and not edit the userdflt.

Also I think it controls the 2 fans in the front cause at 20% you will get a big difference in noise. Almost as loud as pre-boot fans.

I haven't 'dellved' into the saving profiles arena yet.  i've been using the dfltusr profile as a base.  even then though i can't get the cpu fan to stay were i set it.  i've done the profile policies thing trying to set the parameters so that it does, "x" when the system "starts" and haven't had any luck.  i took the manuals to work today to see if i can find anything in there.  also in the policies section, how do you delete one of the checkable options in the box to get rid of it, or are they there forever you just need to keep the ones you don't want/use unchecked??

thanx for the responses guys:)