Matrox G55-MDDE32LPDF, GDDR, 64 bit, 2048 x 1536 pixels, PCI Express x1 Matrox G55-MDDE32LPDF. Graphics card memory type: GDDR, Memory bus: 64 bit. Maximum resolution: 2048 x 1536 pixels. Dual Link DVI. Interface type: PCI Express x1. Cooling type: Passive