ASUS Extreme N6600 Silencer, GDDR2, 128 bit, 550 MHz, 2048 x 1536 pixels ASUS Extreme N6600 Silencer. Processor frequency: 300 MHz. Graphics card memory type: GDDR2, Memory bus: 128 bit, Memory clock speed: 550 MHz. Maximum resolution: 2048 x 1536 pixels. DirectX version: 9.0, OpenGL version: 1.5