Diamond ATI Radeon HD 5670 1 Dual Link DVI/1 HDMI/VGA Graphics Card 5670PE51G PCI Express 2.1 x16 bus interface DirectX 11 support 8 Color ROP Units GDDR5 memory interface 1024MB Memory 775 mhz core clock and 1000 MHz memory clock Supports DirectX 11, including Shader Model 5.0, and OpenGL 3.21