To overclock the RED DEVIL RX 480 we used AMD Wattman inside the Crimson software suite. This provides us with extensive options to modify.
Overclocking the card was easy and we managed to boost the GPU and memory clock beyond the factory overclock applied by PowerColor. Our result took the GPU clock up to 1430MHz and modifying the memory clock up to 2100MHz. We achieved this by setting voltages to 1000 and increasing power limit to 5%. Pushing the card a little further meant we were able to receive a higher score in Unigine Heaven 4.0 which is shown below.