Judging from the available specs, it seems likely the D300 is a modified version of this: http://www.amd.com/us/products/workstation/graphics/ati-firepro-3d/v79

Judging from the available specs, it seems likely the D300 is a modified version of this: http://www.amd.com/us/products/workstation/graphics/ati-firepro-3d/v7900/Pages/v7900.aspx http://www.amd.com/us/products/workstation/graphics/ati-fire...