The sapphire r9 390 series is based on the latest graphics core next architecture from amd and is designed to provide enthusiast level graphics performance the sapphire nitro r9 390 is the most powerful member of the sapphire nitro gaming series with an 8gb frame buffer and a sapphire performance index of 4 it is guaranteed to breeze through games at 1080p on maximum settings and deliver a great gaming experience at 1440 and beyond the latest model is now factory fitted with a backplate and