Silent passive cooling means true 0db perfect for quiet home theater pcs and multimedia centers lowers graphics card emi by 66 for more stable operation clearer display and safer computing directxreg 11 gpu accelerated tessellation allows more detailed geometry to be packed into a scene allowing characters to be rendered with cinema quality detail specifications graphics engine amd radeon hd 5450 bus standard pci express 21 video memory ddr3 2gb engine clock 650 mhz memory