Gigabyte GeForce GTX 970 G1 Gaming GDDR5 Pcie Video Graphics Card, 4GB Windforce 3X Cooling System, Flex Display Technology, GPU Gauntlet, Sorting, Ultra Durable VGA BASE: 1178 MHz / BOOST: 1329 MHz, 1664 CUDA Cores, 4GB GDDR5 memory, 256-Bit memory Bus, PCI-E 3.0, DirectX 12, OpenGL 4.4 Powered by Nvidia GeForce GTX 970 GPU, Integrated With Industry's Best 4GB GDDR5 Memory 256-bit Memory Interface Features Dual-link DVI-I / DVI-D / HDMI / 3 Display Port, Digital Max Resolution 4096 x 2160, Analog Max Resolution 2048 x 1536 System Power Supply Requirement: 550W (With One 6-Pin and One 8-pin External Power Connectors)