MSI ATI Radeon HD6950 2 GB DDR5 2DVI/HDMI/2x Mini DisplayPort PCI-Express Video Card R6950 TWIN FROZR II/OC R6950 TWIN FROZR II/OC 5000 MHz Memory and interface is 256-bit Chipset: Radeon HD6950 Engine Mini DisplayPort PCI-Express Video Card Chipset: Radeon HD6950 Engine. 5000 MHz Memory and interface is 256-bit.