DELL Quadro FX5800, 4 GB, GDDR3, 512 bit, 2560 x 1600 pixels, PCI Express x16 DELL Quadro FX5800. Discrete graphics card memory: 4 GB, Graphics card memory type: GDDR3, Memory bus: 512 bit. Maximum resolution: 2560 x 1600 pixels. DirectX version: 10, OpenGL version: 2.1. Interface type: PCI Express x16. Cooling type: Active