To continuous streamlining of FinFET 14 nm production process, the latest Polaris GPUs that power SAPPHIRE NITRO+ Radeon RX 580 cards are even more energy-efficient. This allowed SAPPHIRE to crank up the clocks and reach up to 10% better performance compared to the previous series. To add even more headroom for overclocking. Factory overclocked cores of the standard SAPPHIRE NITRO+ RX 580 run with a 1411 MHz boost clock.