PowerColor ATI Radeon AX3450 512 MB DDR2 DVI PCI-Express Video Card 512MD2-H - Retail Chipset: Radeon HD 3450 Chipset: Radeon HD 3450. Engine Clock: 600 MHz. Video Memory: 512MB DDR2. Memory Clock: 800 MHz. Memory Interface: 64-bit Bus: PCI-Express x16 (Support PCI-Express 2.0). Connectors: VGA; DVI. Thermal: Fanless RAMDAC: 400 MHz. Steam Processors: 40. Max. Resolution: 2560 x 1600 Support ATI CrossFireX Multi-GPU Technology. Support Microsoft DirectX 10.1, Shader Model 4.1 and OpenGL 2.0 Support HDMI/HDCP