AMD Radeon R9 280 3GB GDDR5, Engine Clock: 850 MHz, Boost Clock: 940 MHz, Memory Clock: 5000 MHz Effective, Memory Interface: 384-bit, Bus: PCI-Express 3.0 x16, Stream Processors: 2048, RAMDAC: 400 MHz, Max. Resolution: 4096 x 2160, Support 3x Display Monitors, Connectors: DVI-D, DVI-I, HDMI, DisplayPort.