HIS R9 280X iPower IceQ X2 Boost Clock 3GB/GDDR5/PCI-E/DLDVI-I/HDMI/2xMini DP Graphics Card H280XQM3G2M Core Clock up to 850MHz 3GB Memory Memory Clock up to 6000MHz 1 x HDMI 2 x Mini DisplayPort 1 x DVI