Sajin
Since you own the card just adjust the fan speeds via precision x1 to figure out exactly which fan is which.
I did exactly that, Sajin, and found that even precision can't make up its mind which should be which. This may not be affecting anyone else, but when I was adjusting fan speeds to determine which was which, precision would take FOREVER to initiate the new setting, and it almost looked like it was cycling through all the fans and adjusting each one at a time. At one point I raised the speed up on "fan 1" and it was clearly the small vrm fan. My case was open and I could clearly hear that little fella going full tilt. But then I tested the others and wasn't seeing/hearing the one I was looking for, so I went back to "fan 1" and now this time I was the radiator fan. It was at this point that I decided to take the radiator fans off of the cards control, because my whole reason for doing all that was to try isolating an issue I was having with the "aggressive" fan curve be too weak and Precision being too unreliable to actually keep even that setting active.
I hope this user has better luck than I did.