You won't need any wattool,wattman,afterbuner,trixx or any other software of that type, i set everything in the bios like Insider00 did with wattool, so :
Def gpu clock : 1144 Mhz
Def mem clock: 2150 Mhz
Mem straps 1625
VDDC (gpu voltage) set at 925mV
TDP 120w
Set fans to hold cards at about 70c, so you don't need fan regulation either
Before flashing remove ALL software that you used before for manipulating (wattool,wattman,afterbuner,trixx...).
Then clean all video drivers with DDU.
Flash bios.
Reboot, reinstall video drivers.
Test.
Enjoy
http://www.filedropper.com/s480-8gb-micron
worked great but my 480 nitro still keeps the fan at 0% any insight in what might be happening? also the newest driver didn't recognize it, can the ATI pixel clock patcher solve this or not??