Sapphire Radeon R9 290 4GB GDDR5 DUAL DVI-D/HDMI/DP TRI-X OC Version PCI-Express Graphics Card 11227-00-40G 512-bit GDDR5 2 x DVI-D 1 x HDMI 1 x Display Port Supports up to 3 display monitor's without DisplayPort 4 x Maximum Display Monitor(s) support SAPPHIRE Tri-X Cooling Technology Anti-aliasing features 512-bit GDDR5 2 x DVI-D 1 x HDMI 1 x Display Port