Reference specifications call for boost and base GPU clocks of 1266 MHz and 1120 MHz, respectively, and either 4 or 8GB of GDDR5 memory over a 256-bit interface. All told, the Radeon RX 480 offers up a total of 5.8 TFLOPs of compute performance with up to 224GB/s of peak memory bandwidth and the card requires only a single 6-pin PCIe power feed.
The Radeon RX 480 is only about 9.5" inches long and sports a typical dual-slot form factor. It offers strong performance in its price segment ($199 — $239) as well. In comparison to NVIDIA's more expensive GeForce GTX 970, AMD's Radeon RX 480 fares very well. The Radeon RX 480 also offers roughly 85-95% of the performance of the more expensive previous gen Radeon R9 390 and was able to overtake it with some basic overclocking.
The Radeon RX 480's power characteristics were slightly better than the GeForce GTX 970 as well but when you consider the almost two-year old NVIDIA GPU is manufactured using a 28nm process, versus the 14nm FinFET process of Polaris 10, AMD's Radeon RX 480 power characteristics are less impressive.