SAPPHIRE NITRO+ Radeon™ RX 580 8GD5 V2 to continuous streamlining of FinFET 14nm 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 previous series. To add even more headroom for overclocking. Factory overclocked cores of the standard SAPPHIRE NITRO+ RX 580 run with a 1411MHz boost clock.