AMD 580 8GB GPU Tempratures

#1

Hi Guys i have a 12 GPU rig and even after flashing VBios im not able to bring temperature down.
My GPUs are running around 80 degrees. All my cards are AMD 580 8GB.
Please help me to bring temperatures down and to get 30mh/s. Right now i am getting about 28mh/s.
Here is MY OC settings.