Matrox Graphics Unveils Triple and Quad Monitor DisplayPort M-Series Graphics Cards Montreal, Canada, June 23, 2009 – Matrox Graphics Inc., the leading manufacturer of specialized graphics solutions, today announced the availability of the Matrox M9138 and Matrox M9148 DisplayPort graphics cards. Expanding the M-Series product line, these new triple- and quad-monitor cards offer a remarkable 1 GB of memory, and with support for independent or stretched mode at resolutions up to 2560×1600 per output, users