If you're going to pay the price of a new domestic PC, for a workstation graphics card meant for CAD, Revit etc, then the first question is: "Do you have a proper workstation to fit it into, and do you also run a workstation-grade OS able to accept the drivers?" Workstations and their required OS versions can be very picky about such things.

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Learn the Secrets of Poser 11 and Line-art Filters.