SAPPHIRE R9 290X Tri-X features the latest GCN (graphics core next) architecture from AMD with 2816 stream processing units and an enhanced engine clock of up to 1040Mhz. It is equipped with 4GB of the latest high performance GDDR5 memory on a 512-bit interface and now clocked at 1300 MHz (5.2GHz effective) delivering higher bandwidth than the reference design.