Gigabyte GV-N970WF3OC-4GD GTX970 4G OC Version Winforce 3X Cooling PCI-E Video card , 1644CUDA , 1253Mhz/ 7000Mhz , Flex Display for up to 4 Display , Dual DVI+HDMI+ 3x Display Ports

Chipset GeForce GTX 970 Core Clock Base / Boost clock:1114 / 1253 MHz Memory Clock 7Gbps Process Technology 28 nm Memory Size 4 GB Memory Bus 256 bit Card Bus PCI-E 3.0 DirectX 12 OpenGL 4.4 PCB Form ATX Digital max resolution 4096 X 2160 Analog max resolution 2048 x 1536 Multi-view 4 I/O Dual-link DVI-I / DVI-D / DisplayPort3 / HDMI1 Card size L=310mm, W=129mm, H=43mm Power requirement 550W(with one 6-pin and one 8-pin external power connectors)