ASUS GT640-2GD3, GeForce GT 640, 2 GB, GDDR3, 128 bit, 2560 x 1600 pixels, PCI Express 3.0 ASUS GT640-2GD3. Graphics processor family: NVIDIA, Graphics processor: GeForce GT 640, Processor frequency: 901 MHz. Discrete graphics card memory: 2 GB, Graphics card memory type: GDDR3, Memory bus: 128 bit, Memory clock speed: 1782 MHz. Maximum resolution: 2560 x 1600 pixels. DirectX version: 11, OpenGL version: 4.2, Dual Link DVI. Interface type: PCI Express 3.0. Cooling type: Active