PowerColor ATI Radeon AX3450 256 MB DDR2 VGA/DVI/HDMI PCI-Express Video Card 256MD2-H - Retail Chipset: Radeon HD 3450 Engine Clock: 600 MHz. Video Memory: 256MB DDR2. Memory Clock: 666 MHz. Memory Interface: 64-bit Bus: PCI-Express x16 (Support PCI-Express 2.0). Connectors: VGA; DVI; HDMI RAMDAC: 400 MHz. Steam Processors: 40. Max. Resolution: 2560 x 1600 Thermal: Fanless. Support Microsoft DirectX 9.0 and OpenGL