ASUS EN7600GS Silent HTD 512MB, GDDR2, 128 bit, 540 MHz, 2048 x 1536 pixels ASUS EN7600GS Silent HTD 512MB. Processor frequency: 400 MHz. Graphics card memory type: GDDR2, Memory bus: 128 bit, Memory clock speed: 540 MHz. Maximum resolution: 2048 x 1536 pixels. DirectX version: 9.0, OpenGL version: 2.0