Installed these on a friends rig today running a 780 chipset , not had chance to have a good play with them myself but he seems happy with the new touches , i WISH nvidia would release software for custom fan profiles within the control panel , i was kinda hoping that would be in there somewhere , i love riva tuner but its all i use it for , i would prefer to do without it
EDIT.ive just installed them myself , it seems you may be able to set triggers for differant fan speeds relating to GPU temps
Ill have a play and report back.....if anyones interested ha ha :P