MSI NVIDIA GeForce GTX 660 2GB GDDR5 PCI Express 3.0 Graphics Card N660 TF 2GD5/OC Chipset: NVIDIA GeForce GTX 660 Video Memory: 2GB GDDR5 Bus: PCI-Express 3.0 x16 Max. Resolution: 2560 x 1600 Connectors: DVI-I, DVI-D, HDMI, DisplayPort Memory Clock: 6008 MHz Core Clock: 1033 MHz