I know lightning matrix toxic come with more phases ect so non ref pcb... 280x dc2 and MSI gaming twinfrozer comes with rearranged PCB I guess doesn't mention more phases or anything on their sites you cant see a reference 280x heh. Stock 290 for 400$ and that gelid cooler is the best bet IMO, (anyways I tend to redo tim and retighten heatsink for best temps).

Its so funny I just ran thru newegg there isn't a ref cooler for 280x lol. WHY THE HELL couldn't they take that approach for 290 290x , silly silly AMD but atleast the CARD itself is LEGENDARY.