CLUB3D VGA X1900XT 512MB PCI-E, GDDR3, 256 bit, 1450 MHz, 2560 x 1600 pixels CLUB3D VGA X1900XT 512MB PCI-E. Processor frequency: 625 MHz. Graphics card memory type: GDDR3, Memory bus: 256 bit, Memory clock speed: 1450 MHz. Maximum resolution: 2560 x 1600 pixels. DirectX version: 9.0, OpenGL version: 2.0, Dual Link DVI