ASUS Extreme AX300SE-X/TD Series, GDDR, 64 bit, 400 MHz, 2048 x 1536 pixels ASUS Extreme AX300SE-X/TD Series. Processor frequency: 400 MHz. Graphics card memory type: GDDR, Memory bus: 64 bit, Memory clock speed: 400 MHz. Maximum resolution: 2048 x 1536 pixels. DirectX version: 9.0, OpenGL version: 1.5, Dual Link DVI